Yes, you can remove stubborn cooking odors with an ozone generator — especially smells from fish, curry, grease, or burnt food — but it must be used with care and the right technique. Ozone breaks down odor-causing molecules at the source, penetrating fabrics, porous materials, and hard-to-reach corners in ways that standard cleaning can’t.
Below, we’ll walk through how it works, when to use it, and why it might be your best bet for lingering food smells.

Why Do Cooking Smells Linger So Long?

Some meals are memorable for the wrong reason: their smell won’t go away. That’s because cooking odors — especially from frying, grilling, or spice-heavy dishes — bond with surfaces in your kitchen and spread through ventilation systems.

Here’s what makes food odors hard to eliminate:

• Oil vapors cling to walls, cabinets, and textiles like curtains and upholstery.
• Proteins and sulfur compounds (like those found in fish or eggs) leave behind intense residues.
• Strong spices like curry or garlic release volatile compounds that sink deep into porous materials.
• Burnt food creates carbon-based smoke that embeds in everything from carpet to drywall.

These compounds don’t just float in the air — they embed in your home. That’s where ozone comes in.

How Ozone Works on Cooking Odors

Ozone (O₃) is a molecule made of three oxygen atoms. It’s highly reactive, which makes it powerful against odors.

When ozone encounters odor molecules, it oxidizes them — breaking them apart at a chemical level. This is different from air purifiers or deodorizers that simply trap or mask the smell.

Specifically, ozone can:

• Neutralize aldehydes, sulfur, and amines that come from overcooked meat, eggs, and fish.
• Penetrate porous materials like wood cabinets, rugs, and drywall.
• Reach into vents and ductwork to neutralize smells that traveled through the HVAC system.

For a breakdown of how ozone works in general, see our guide:
👉 What Is an Ozone Machine? Benefits and Risks Explained

Step-by-Step: Using an Ozone Generator for Cooking Odors

Here’s how to safely and effectively use an ozone machine to remove cooking smells from your kitchen or home.

✅ Step 1: Prep the Area

• Remove people, pets, and plants from the space.
• Seal the room by closing all windows and doors.
• Remove or cover exposed food items and cookware.

✅ Step 2: Position the Machine

• Place the ozone generator near the source of the odor (usually in the kitchen).
• Elevate it to counter or table height for better air circulation.

✅ Step 3: Set the Timer

• Start with 30–60 minutes for light to moderate smells.
• For strong odors (burnt food, fried fish), 2–4 hours may be needed.
• Leave the room before starting the machine.

✅ Step 4: Air Out Thoroughly

• After the timer finishes, wait at least 1–2 hours before re-entering.
• Open all windows and run fans to ventilate the space.

See our full guide:
👉 How Long to Wait After Using an Ozone Generator

Real-Life Example: Burnt Bacon Blues

One user told us about a weekend breakfast that went wrong — badly burnt bacon set off the smoke alarm and left a strong smell lingering for days. Despite opening windows, using candles, and cleaning the stove, the odor clung to the couch and kitchen walls.

They used a medium-sized ozone generator for 2 hours with the doors shut and the HVAC off. After ventilating for another 2 hours, the smell was completely gone — no residue, no trace. It worked where sprays and scrubbing had failed.

Ozone vs. Other Odor Removal Methods

Let’s compare:

👉 For other strong smells like cigarettes or mold, ozone is often the most effective method:

• Remove Cigarette Smoke with Ozone
• Ozone for Mold Smell

Is Ozone Safe in Kitchens?

Ozone is only safe when the kitchen is unoccupied during use — and fully aired out afterward.

You must:

• Turn off HVAC or exhaust fans that might spread ozone.
• Wait until ozone fully dissipates before prepping or eating food.
• Keep pets out until the smell is completely gone.

Want to avoid common mistakes? Check out:
👉 Ozoning a House: Do’s and Don’ts

Choosing the Right Ozone Generator Size

The effectiveness of your treatment depends on the size and strength of the machine. For most kitchens:

• A 2,000–5,000 mg/h ozone generator is ideal for small-to-medium kitchens.
• Open-concept homes may require larger units or multiple sessions.

👉 Use our sizing chart here:
Ozone Generator Sizing Guide

When You Shouldn’t Use Ozone

Ozone is not the right tool for:

• Removing grease buildup (clean first, then use ozone).
• Spaces where you can’t fully ventilate afterward.
• Continuous daily use — it’s meant for occasional deep treatment.

For ongoing odor control, consider pairing ozone with a UV HVAC system:
👉 UV Light in HVAC: Pros and Cons

FAQ: Cooking Odors & Ozone Generators

Will ozone remove the smell of burnt food?

Yes — ozone works well on carbon-based smoke odors. Burnt toast, bacon, or popcorn odors are common targets for ozone treatment.

Can I use ozone while I’m cooking?

No. Ozone should never be used while people are in the room, especially while food is being prepared or served.

How long will the results last?

If the source of the odor is removed (cleaned thoroughly), ozone can permanently eliminate lingering smells. If not, odors may slowly return.

Is it safe to ozone a kitchen overnight?

Yes — as long as nobody enters the space until morning and it’s ventilated properly before use. Always follow manufacturer safety guidelines.

Final Thoughts

If cooking odors are ruining your comfort at home — ozone can help you start fresh. Whether it’s lingering curry smell, fried fish, or burnt food that just won’t leave, a properly used ozone generator is one of the few solutions that truly neutralizes the source of the smell.

Just remember: use it safely, ventilate well, and treat ozone like a powerful tool — not a casual air freshener.

For more in-depth guidance, don’t miss our article:
👉 What Is an Ozone Machine?

Quick Answer: Yes, ozone generators can effectively eliminate cigarette smoke odors by chemically breaking down odor molecules in the air and porous surfaces.

However, they won’t remove nicotine stains or residue, and require proper safety precautions as ozone can be harmful to breathe.

That moment when you first walk into your “new” apartment and realize the previous tenant must have smoked like a chimney? Or when you buy a used car that smells like it hosted poker nights for a 1950s detective?

Cigarette smoke doesn’t just linger – it moves in, unpacks its bags, and refuses to leave. No amount of Febreze seems to make a dent in that stubborn, stale tobacco smell that clings to everything.

Why Cigarette Smoke is the Worst Houseguest

Cigarette smoke is the ultimate squatter of odors. Unlike cooking smells or pet odors that fade, tobacco smoke contains sticky tar and chemical compounds that chemically bond to surfaces. The nicotine and other VOCs in smoke penetrate deep into fabrics, drywall, and even wood, creating odor reservoirs that keep releasing that distinctive smell long after the last cigarette was extinguished.

I’ll never forget helping my cousin clean her inherited family cabin – despite years of vacancy, the curtains still smelled like her grandfather’s pipe tobacco. Traditional cleaning methods only address surface-level smells, which is why so many people turn to ozone generators as a last resort.

How Ozone Fights Cigarette Odors at the Molecular Level

Ozone generators work differently than air fresheners or purifiers. They produce ozone (O₃), an unstable molecule that aggressively oxidizes and destroys odor compounds. Here’s the science behind why it works so well on cigarette smoke:

• Chemical breakdown: Ozone molecules attack and dismantle the volatile organic compounds (VOCs) that cause tobacco odors at the molecular level
• Deep penetration: The gas reaches places cleaning can’t – inside walls, between floorboards, deep in upholstery fibers
• Complete neutralization: Unlike masking agents, ozone actually eliminates the odor compounds rather than covering them up

Important note: While ozone is incredibly effective against odors, it’s not a cleaning product. Those yellow nicotine stains on walls or that sticky film on windows will still need elbow grease and proper cleaners.

What Ozone Can and Can’t Do for Cigarette Smoke

Ozone Safety: Critical Precautions You Must Take

While ozone is powerful against odors, it’s not something to use casually. Ozone is a lung irritant that can cause serious respiratory issues with exposure. Follow these safety rules religiously:

• Never occupy the space during treatment – no people, pets, or even plants
• Remove all living things and seal food items before running the generator
• Ventilate thoroughly afterward – open windows and run fans for at least 1-2 hours
• Use proper timing – more ozone isn’t better; follow manufacturer guidelines strictly

Warning: Those inexpensive “ionizing” air purifiers claiming ozone benefits typically produce negligible amounts that won’t impact smoke odors. For serious odor removal, you need a proper ozone generator. Learn more about how ozone machines actually work before purchasing.

Step-by-Step Guide to Using Ozone for Smoke Removal

For Homes and Rooms:

1. Prep the space: Remove all living things, clean surfaces thoroughly, and close all windows/doors
2. Position the generator: Place it centrally and set the timer (typically 2-4 hours for moderate odors)
3. Wait it out: After treatment, leave the room closed for 2 more hours to let ozone work
4. Air it out: Open windows and ventilate thoroughly for at least 1-2 hours before re-entering

For Vehicles:

1. Deep clean first: Vacuum and wipe all surfaces with an enzymatic cleaner or vinegar solution
2. Run the ozone machine: Place it inside with windows up (engine off) for 30-60 minutes
3. Ventilate: Open all doors and let it air out for at least an hour before driving

Pro tip: For severe cases, you may need 2-3 treatments over several days. Between ozone sessions, sprinkle baking soda on upholstery to absorb more odor, then vacuum it up.

Other Effective Ways to Combat Smoke Odors

If ozone isn’t right for your situation, try these alternatives:

1. Activated charcoal bags: Excellent for maintaining freshness in cars or closets after ozone treatment
2. HEPA air purifiers with carbon filters: Helpful for capturing remaining smoke particles and odors
3. Deep cleaning solutions: TSP cleaner for walls, steam cleaning for carpets, odor-blocking primer for painting
4. Natural odor absorbers: Bowls of white vinegar or coffee grounds can help between treatments

For best results: Combine methods. Deep clean first, use ozone for the stubborn odors, then maintain with air purifiers or charcoal bags. It’s a comprehensive approach that actually works.

The Final Verdict on Ozone for Cigarette Smoke

Ozone generators can be miracle workers for eliminating cigarette odors, but they’re not magic bullets. Consider ozone treatment when:

• You’ve already cleaned surfaces but the smell persists
• You can properly vacate the space during treatment
• You’re dealing with embedded odors in fabrics or hard-to-reach areas

For mild cases, start with thorough cleaning and air purifiers. For serious smoke damage, ozone can be your nuclear option – just always prioritize safety and proper ventilation above all else.

While ozone clears smoke odors, it fails for infestations like bed bugs. See the ozone and bed bug guide here.

Still fighting stubborn smoke smells? Check out our guide on removing smoke odor from cars for more targeted solutions to this persistent problem.

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Frequently Asked Questions

Will ozone get rid of cigarette smoke completely?

Ozone is highly effective at eliminating the smell of cigarette smoke, but it doesn’t remove all traces of smoking. It can neutralize the odor-causing molecules that linger in the air and porous materials, but tar, nicotine stains, and yellowing of surfaces will still require traditional cleaning methods. Think of ozone as the final step — not the only step.

How long should I run an ozone generator for cigarette smoke removal?

For a single room with moderate smoke odor, 2–4 hours is usually sufficient. For entire homes or deeply embedded smells, sessions may need to run for 6–8 hours or be repeated across multiple days. Always follow your machine’s safety and timing guidelines, and never stay in the area during treatment.

Can I use an ozone generator in a house I currently live in?

Yes, but you must vacate the area while the generator is running and during the dissipation period afterward. No people, pets, or plants should be inside while ozone is present. Many users treat one room at a time to make it manageable, especially if relocating temporarily isn’t an option.

What’s better for cigarette smoke: ozone or UV light in HVAC systems?

They serve different purposes. Ozone neutralizes odors by breaking down molecules directly, whereas UV lights in HVAC systems disinfect air passing through the system, killing mold, bacteria, and viruses but not eliminating existing odors. If you’re tackling lingering smells, ozone is the better choice — but if you’re focused on keeping your air clean long-term, UV light can be a helpful addition.
👉 Learn more about the pros and cons of UV lights in HVAC systems.

Do ozone treatments damage electronics or furniture?

Generally, no. Short-term ozone use doesn’t harm most materials, but long-term or frequent treatments may degrade rubber seals or certain plastics over time. If you’re concerned, remove delicate electronics or cover them before treatment. Leather furniture is usually fine, but some users prefer to condition it afterward to be safe.

How can I tell if the ozone treatment worked?

Once the room is safe to enter and fully aired out, use your nose — the lingering cigarette smell should be gone. There may be a faint “clean” or slightly metallic ozone scent at first, which fades with ventilation. If the tobacco odor remains, it may indicate that more ozone is needed or that additional cleaning is required on surfaces.

Can ozone remove smoke smell from clothes?

Yes, but it’s tricky. You can treat clothes by hanging them in a closed room or closet with a small ozone machine — just make sure the items are spaced out for airflow and that the space is unoccupied during treatment. Afterward, wash the clothes to remove any residue. Ozone won’t damage fabrics with occasional use, but delicate materials should be handled with care.

Yes, ozone can remove skunk smell — even the deeply embedded kind that clings to furniture, car upholstery, clothing, or entire rooms. Ozone breaks down the odor-causing compounds at a molecular level, making it one of the few methods that can truly neutralize skunk spray rather than just mask it.

Why Skunk Smell Is So Hard to Eliminate

Skunk spray isn’t just smelly — it’s *chemically designed* to linger. The main culprit is a class of sulfur-based compounds called **thiols**, which are extremely potent. Even a few parts per billion can create a noticeable odor.

Skunk spray can penetrate fabric, wood, carpet, plastic, and even wall paint. Worse, the smell can intensify when the area becomes damp or humid, reactivating the stench long after the spray occurred. That’s why home remedies like vinegar, tomato juice, or air fresheners usually fall short — they may dull the scent temporarily, but they don’t neutralize the source.

How Ozone Neutralizes Skunk Odor

Ozone (O₃) works by oxidizing the molecules responsible for the smell. When introduced into a room or object, ozone attacks the thiol compounds and breaks them apart at the molecular level. Once oxidized, those stinky sulfur molecules are no longer recognizable — and no longer smell.

Unlike sprays or cleaners that cover up odors, ozone permanently removes them from the environment. That’s why ozone is used professionally for smoke damage, mold remediation, and yes — skunk odor.

Where Skunk Odors Hide: Common Trouble Spots

Skunks don’t always make a direct hit. Their spray can **drift into crawl spaces, soak into fabrics, or settle inside a car**. Each situation needs a slightly different treatment approach:

• In the home: Skunk odor can cling to walls, furniture, floors, vents, curtains, and insulation — especially near doors or crawlspace entries where skunks like to hide.
• In vehicles: If your pet got sprayed and jumped in the car, the smell can work its way into seats, AC vents, and carpet padding.
• On clothing or gear: Backpacks, jackets, or boots exposed to skunk spray often require deep treatment or disposal.
• In crawl spaces or basements: Skunks sometimes nest beneath homes, leaving a smell that rises up through floorboards and ductwork.

Using an Ozone Generator for Skunk Smell

Using ozone to treat skunk odor can be highly effective — **but it must be done safely and properly**.

Here’s how to use an ozone machine step by step:

1. Evacuate all people and pets from the area. Ozone is harmful to breathe during treatment.
2. Seal off the space as much as possible. Close doors, windows, vents, and HVAC returns to keep ozone concentrated where needed.
3. Run the ozone generator for 1–4 hours, depending on the severity of the smell and the room size.
4. Allow at least 1–2 hours of airing out after the cycle ends. Ventilate with fans and open windows.
5. Repeat if needed. Some deeply saturated materials may require more than one treatment.

For more on how ozone works and safety tips, visit our complete guide to ozone machines.

Can You Use Ozone in a Car That Smells Like Skunk?

Yes — **ozone is one of the best tools for eliminating skunk odor in vehicles**. However, a few precautions are key:

• Remove any porous materials you can: seat covers, mats, blankets, or crates should be washed or aired separately.
• Place the ozone machine on a raised surface inside the car. Close all windows and doors except one slightly open with a hose for venting the ozone in.
• Connect a small extension cord and let the generator run for 1–2 hours.
• After treatment, open all doors and allow the car to fully air out for another hour or more.

Important: Do not sit in the car during treatment. Ozone can be hazardous in confined spaces.

What About Pets That Get Sprayed?

Unfortunately, **you can’t use ozone directly on your dog or cat**. Ozone is dangerous for living beings to inhale or be exposed to at high levels.

For pets, stick to a vet-approved skunk shampoo or a proven mix of:

• 1 quart hydrogen peroxide
• ¼ cup baking soda
• 1 teaspoon dish soap

Scrub thoroughly and rinse well. Keep pets away from ozone-treated areas until fully ventilated.

Ozone vs. DIY Skunk Odor Remedies

Some people try vinegar, charcoal, air purifiers, or even coffee grounds to battle skunk smell. While these can help absorb odor temporarily, **they don’t eliminate the cause**. Even UV HVAC systems — which work wonders for germs and mold — won’t neutralize thiols effectively on their own.

If you’re curious how ozone compares to UV systems in your home, check out our breakdown on the pros and cons of UV light in HVAC.

Is Ozone Safe for Skunk Odor Removal?

Yes — as long as the treatment space is unoccupied and well-ventilated afterward. Ozone naturally reverts back to regular oxygen within a few hours. Still, it’s not something to use lightly or while people or animals are present.

If you’re unsure, you can hire a professional odor removal service that uses ozone treatment and follows industry safety protocols.

Frequently Asked Questions

How long does it take for ozone to remove skunk smell?

Usually 1 to 4 hours per session. For severe odors or porous materials, you may need to repeat the treatment.

Can ozone damage furniture or car interiors?

Prolonged exposure to high ozone levels can slightly fade rubber or leather over time. For one-time treatments, it’s generally safe.

Will a regular air purifier help with skunk smell?

Not really. Most air purifiers trap particles — they don’t neutralize sulfur compounds. A carbon filter might absorb some odor, but ozone is far more effective.

Can I stay in the house while the ozone machine is running?

No. Never occupy a room or vehicle being treated with ozone. It is toxic to breathe during treatment.

Final Thoughts: When Nothing Else Works, Ozone Might

If you’ve tried everything and that *skunk smell just won’t quit*, ozone may be your best ally. It’s **one of the only tools that can truly erase odor at the source**, even from tight spaces, fabric-lined cars, and basements where skunks like to sneak.

Just be sure to use it safely, allow plenty of ventilation time, and repeat the treatment if needed. Once that sulfur is gone for good, you’ll be breathing easy — without holding your nose.

How Long to Wait After Using an Ozone Generator

It’s generally recommended to wait at least 1–2 hours after using an ozone generator before re-entering the treated space. Although ozone breaks down naturally, it’s critical to give it time to dissipate to a safe level before anyone returns. Inhaling ozone can irritate your lungs and airways—similar to the effects of breathing in strong chemical fumes like bleach fumes.

Recommended Waiting Times

Here are general guidelines for how long to wait after using an ozone generator, based on the size of the space:

Always use an ozone monitor if possible to confirm the space is safe. Health experts recommend re-entering only once ozone levels fall to 0.05 parts per million (ppm) or lower. If levels remain high, extend the wait time or increase ventilation.

How to Tell If It’s Safe to Re-Enter Without a Monitor

While an ozone monitor is the most accurate way to check safety, not everyone has one on hand. If you’re working without a monitor, here are some general tips to help you stay safe:

• Wait longer than recommended times: If the room smells strongly of ozone, add at least 1–2 extra hours before entering.
• Smell test: Ozone has a sharp, chlorine-like smell. If you can still smell it, it’s not safe yet—even if it’s faint.
• Use ventilation cues: If you opened windows or ran HVAC systems, ozone may have dissipated more quickly. Still, err on the side of caution.
• Better safe than sorry: When in doubt, wait longer or return briefly while holding your breath and wearing a mask to test the air, then exit quickly if any irritation occurs.

These tips aren’t a substitute for a real ozone meter, but they help reduce risk when you’re going by feel. For comparison, the effects of breathing ozone are similar to exposure to bleach fumes—and just as dangerous at high levels.

Why You Should Wait

Ozone generators are powerful tools for removing odors, mold, and bacteria. They work by releasing ozone gas (O₃), which oxidizes and breaks down contaminants. But that same power comes with a risk: ozone is a known lung irritant.

Breathing in high concentrations of ozone can lead to:

• Chest pain and tightness
• Throat and eye irritation
• Shortness of breath or coughing

That’s why it’s important to give ozone time to clear out before returning to the treated space. In fact, the health effects of ozone exposure are similar in severity to inhaling bleach fumes or other harsh chemicals.

Key reasons to wait:

• Ozone levels must drop below 0.05 ppm to be considered safe
• Lingering ozone can irritate your lungs, eyes, and sinuses
• Closed spaces allow ozone to build up and persist longer
• Waiting allows time for ozone to react with and neutralize contaminants fully

  

When Not to Use an Ozone Generator

Ozone machines can be effective, but they’re not the right tool for every situation. In fact, using them in the wrong environment can cause more harm than good.

Avoid using an ozone generator if:

• The space is occupied: Never use ozone in rooms where people or pets are present—even briefly.
• You need daily odor control: Ozone is meant for deep treatments, not everyday air freshening. Use a UV air purifier or HEPA-based system for continuous cleaning.
• You’re unsure how long to run it: Guessing runtimes can lead to excess ozone buildup. Always follow your model’s manual or use the shortest recommended setting.
• You’re treating delicate materials: Ozone can degrade rubber, leather, and certain fabrics over time.

If you’re looking for safer, more hands-off solutions, a UV light system installed in your HVAC could be a better fit for routine air purification.

How Long Ozone Persists

Ozone doesn’t last forever—it has a relatively short half-life and naturally breaks down over time. However, how long it lingers depends on both the concentration and whether the space is ventilated.

Here’s how long ozone can stick around:

• High concentrations (50+ ppm): May persist for 24–48 hours
• Moderate concentrations (5–10 ppm): Can last 10–12 hours
• Low concentrations (0.1 ppm): Usually dissipate in 1–2 hours
  

To speed up ozone removal, ventilate the space by opening windows, turning on fans, or running the HVAC system. Airflow dramatically reduces ozone levels compared to waiting for them to break down naturally.

Ozone vs. Other Air Cleaning Methods

Ozone generators are just one way to clean the air—but they’re not always the most practical or safest. Here’s how they compare to other purification methods:

For a complete guide to DIY options, see our AC coil cleaner recipes. If you’re dealing with mold or air quality issues, comparing these methods helps you choose the right approach.

Safety Tips

Ozone generators are powerful tools, but using them safely is essential to avoid health risks. Here are some important precautions to follow:

• Only run ozone generators in unoccupied spaces—never stay in the room while it’s operating.
• Post warning signs outside the treated area to prevent accidental entry.
• Use the shortest runtime necessary for the job to reduce excess ozone buildup.
• Ventilate the space after treatment by opening windows or running fans.
• Use an ozone monitor and don’t re-enter until levels fall below 0.05 ppm.

By following these simple safety tips, you can make the most of your ozone generator while protecting yourself, your family, and your pets.

Warning Signs of Ozone Overexposure

Even with proper timing, accidental exposure can happen. If you or someone else enters a space too soon after ozone use, watch for these signs of overexposure:

• Burning sensation in eyes or nose
• Scratchy or dry throat
• Chest tightness or mild shortness of breath
• Dry cough that wasn’t present before
• Headache or lightheadedness

If any of these symptoms appear:

• Leave the area immediately
• Increase ventilation by opening windows or turning on fans
• Drink water to soothe airways
• If symptoms persist, seek medical attention

Keep in mind that ozone is powerful enough to neutralize bacteria—but it can also irritate the lungs like inhaling bleach fumes if used unsafely.

Frequently Asked Questions

Why can ozone be dangerous?

Ozone is a powerful oxidizer that can irritate your lungs, throat, and eyes—especially at high levels. It’s similar to breathing in strong chemical fumes like bleach fumes. Prolonged exposure may cause coughing, chest pain, and shortness of breath.

How long does ozone last in a house?

Depending on the generator size and ozone concentration, it can linger for 8–10 hours or more. Proper ventilation will help clear it faster.

Will ozone damage my possessions?

Yes. High ozone levels can break down rubber, fabrics, leather, and some artwork. Keep valuable or sensitive items out of the room, or limit ozone exposure time.

What is a safe ozone level?

The recommended safe threshold is 0.05 ppm. Anything above this may irritate the respiratory system, especially with long exposure.

Should I ventilate after using ozone?

Absolutely. Open windows, run HVAC systems, or use fans to help ozone dissipate faster. This reduces waiting time and ensures safe re-entry.

Can ozone permanently remove odors?

Yes—ozone can permanently eliminate odors caused by smoke, mold, pets, and more. It works by oxidizing odor-causing molecules. For mold issues in particular, see how mold affects window air conditioners.

Is ozone harmful to pets?

Yes. Pets are often more sensitive than humans to airborne irritants. Remove all animals from the area before and during ozone use—and keep them out until ozone levels are safe.

If you’re renting a machine for your treatment, this guide explains when ozone machine rental makes sense and when buying is smarter.