Short answer
To get rid of smoke smell in a house, remove the residue that holds the odor rather than masking it. Ventilate, lift soot off hard surfaces without smearing it, wash or remove smoke-affected fabrics, and filter the air with a high-efficiency HVAC filter and a portable air cleaner that does not produce ozone. The U.S. Environmental Protection Agency warns that ozone generators can damage the lungs and do little to remove odor at safe levels. Smoke that spread beyond the room where the fire started is usually a job for a restoration contractor, after a call to your insurer.
Why does smoke smell stay after the fire is out?
Smoke is a mixture, not a single substance. The EPA describes it as a complex mix of gases and fine particles produced when wood and other organic materials burn. The gases are what you smell first. What keeps the smell around is the residue the smoke leaves behind on walls, ceilings, cabinets, carpet, upholstery, and clothing.
Los Angeles County's public health department makes the point plainly in its guide to cleaning up smoke and soot: smoke odor stays in fabric until the residue is washed out, and much of that residue cannot be seen. Opening the windows clears the smoke that is still in the air. Fresh air does little for residue that has already settled, which is why a house can air out for days and still smell like a fire.
The damage also reaches further than the flames. The U.S. Fire Administration's After the Fire guide warns that belongings the fire never touched may still be ruined by smoke, that anything you want to keep will need careful cleaning, and that the soot and dirty water left behind may contain things that could make you sick.
Where do house fires and smoke problems start most often?
More of them start in the kitchen than anywhere else. Cooking is the leading cause of reported home fires and home fire injuries in the United States, according to the National Fire Protection Association's Home Cooking Fires report. Using 2017 to 2021 data, NFPA estimates an average of 158,400 home cooking fires a year, 44 percent of all reported home fires.
The same report found that about 80 percent of those cooking fires never spread beyond the pan or appliance where they started, and that unattended cooking was the leading factor. More than half of the non-fatal injuries happened when people tried to fight the fire themselves.
Timing matters here as well. Tennessee's State Fire Marshal's Office calls winter the most dangerous season for home fires in the state, which makes fall the right time to check that every smoke alarm in the house works. Our home maintenance checklist covers how often to test and replace them.
What removes smoke smell from a house?
The order of the steps below matters. Wiping surfaces before the loose soot is lifted off spreads it, and filtering the air without removing the residue treats the symptom instead of the cause. The EPA's guide to air cleaners is direct about it: filtration does not replace controlling the source of the pollution and ventilating.
Make sure it is safe, and protect yourself
After any fire the fire department responded to, do not go back inside until they say it is safe, and do not turn the water, power, or gas back on yourself, as the U.S. Fire Administration advises. For cleanup, the EPA recommends gloves, long sleeves, long pants, and an N95 respirator, and says children, older adults, and anyone with heart or lung disease should stay out of the work. An N95 helps against ash and airborne particles, but LA County's public health department notes it does not protect against gases, so it will not stop you smelling the smoke. The LA County cleanup guide adds two electrical cautions: do not use electrical appliances that have been near the fire, and do not use ceiling fixtures if the ceiling is wet.
Ventilate
Open windows and doors when the weather allows. The American Red Cross recommends ventilating a fire-damaged home when the weather is dry, and the EPA lists more outdoor air among the proven ways to reduce indoor air pollution.
Lift soot off without smearing it
Soot is oily and smears easily. The LA County guide recommends taking loose soot off with a HEPA vacuum held slightly above the surface, and never using an upright vacuum, a brush, or a beater bar on sooty fabric, because that drives the residue into other things. On floors, the EPA advises against dry sweeping: mist the surface to keep the dust down, then wet mop. An ordinary vacuum without a HEPA filter puts fine particles back into the air.
Wash hard surfaces from the bottom up
Wash walls a small section at a time, starting at the floor and working up, and leave ceilings for last, which is the order the LA County guide gives. Do not repaint until walls and ceilings are completely dry. Never mix cleaning products: the Red Cross warns that combining household cleaners can give off toxic fumes.
Wash or remove anything made of fabric
Smoke odor stays in fabric until the residue comes out, and the LA County guide recommends soaking smoke-affected clothing and bedding overnight in detergent before washing. Upholstery, curtains, and carpet that cannot go in a washing machine hold odor the same way, and they are often the items that need professional cleaning.
Filter the air with equipment that does not make ozone
Once the residue is coming out, filter what is left in the air. The EPA recommends a high-efficiency HVAC filter rated MERV 13, or the highest rating your system can take, plus a portable air cleaner sized for the room and run on its highest speed where people spend the most time. Confirm the air cleaner does not produce ozone. For the smell itself, look for a unit with a substantial activated carbon filter, because the EPA notes that most filters target either particles or gases, and HEPA filters are built for particles.
Check the HVAC system
A filter that has been catching smoke particles is full of them, so change it once the cleanup is done. The EPA says to consider having air ducts cleaned after a fire only when it is needed, such as when the ducts are clogged with debris or particles are blowing out of the supply vents.
What does not get rid of smoke smell?
- An ozone generator running in a lived-in home. The EPA warns that breathing ozone can damage the lungs, that even relatively low amounts can cause chest pain, coughing, and throat irritation, and that at levels within public health standards, ozone is not effective at removing many odor-causing chemicals. No federal agency has approved ozone generators for use in occupied spaces.
- A HEPA air purifier on its own. HEPA filters capture particles, not the gases that carry odor. A HEPA unit helps with soot in the air, but it will not clear the smell while the residue is still on the walls and in the fabrics.
- Plasma, photocatalytic, and UV-light air cleaners. The EPA says research has not yet shown that these technologies remove gases effectively in portable home air cleaners, and it notes that ionizers, along with some UV and plasma units, may give off ozone.
- Dry sweeping or an ordinary vacuum. Both kick fine soot back into the air instead of removing it.
- Painting over residue. Paint covers a stain, but it does not remove the residue causing the smell. Clean first, and paint only after surfaces are completely dry.
- Throwing damaged things away before they are documented. The American Red Cross advises keeping damaged goods until an inventory has been taken, and recommends photographing the damage for your insurance claim.
Ozone does have a narrow professional use. The EPA notes that high concentrations are sometimes used to treat odor in an empty building during fire restoration, with conditions controlled so no person or pet is exposed. The same page says little is known about the chemical by-products those treatments leave behind, and that ozone can damage rubber, electrical wire coatings, fabrics, and artwork. None of that supports running a consumer ozone machine while people are living in the house.
What should you throw away after smoke exposure?
Throw away food, drinks, and medicine that were exposed to heat, smoke, or soot. The American Red Cross says to discard them, with one exception for frozen food that still has ice crystals.
The USDA does not make that exception: its Fires and Food Safety fact sheet, which University of Tennessee Extension makes available to Tennessee families, warns that smoke fumes can get into food through cardboard and plastic wrap, and even into a refrigerator or freezer, because the door seal is not airtight. The fact sheet says to discard food exposed to smoke fumes. When two good sources disagree about food safety, throwing it out is the safer call.
When can you clean up smoke smell yourself?
Most reported kitchen fires stay small. NFPA found that about 80 percent of reported cooking fires never spread beyond the pan or appliance where they started, and a contained flare-up that left a smell and a film on the cabinets is usually something you can handle with the steps above.
The question is how far the residue traveled. The table below sorts the common situations.
| Situation | Who usually handles it | Why |
|---|---|---|
| A stovetop flare-up that was out quickly, with smoke that stayed in the kitchen | You | The residue is on a few surfaces you can reach and wash. |
| Smoke smell in rooms the fire never reached | A restoration contractor | Residue has settled in places that are hard to reach or clean, including fabrics and the HVAC system. |
| Soot film on walls or ceilings in more than one room | A restoration contractor | Oily soot smears when it is cleaned the wrong way, and large areas take equipment, protection, and time. |
| The fire department put the fire out | A restoration contractor, after your insurer | The home may not be safe to enter until the fire department says so, and the water used to fight the fire needs water damage restoration of its own. |
| The smell comes back after cleaning | A restoration contractor | Some material, often something porous, is still holding residue. |
| Years of indoor tobacco smoke | A different problem | Tobacco residue builds up over time and can remain for years, and the California Department of Public Health says common cleaning methods will not remove it. |
If you are not sure which row you are in, a restoration contractor can tell you on site. If a contained kitchen flare-up does not need TrustPoint, we will say so.
Does homeowners insurance cover smoke damage?
Standard policies usually cover it when the smoke came from a sudden fire. Smoke is one of the named perils on standard homeowners, renters, and condominium policy forms, according to the Insurance Information Institute. Coverage limits and terms vary from policy to policy, so read yours or ask your agent before assuming either way.
Washington State's insurance regulator puts the general rule clearly in its guide to smoke damage and homeowner insurance: standard policies typically cover sudden and accidental smoke damage, including from a kitchen fire, and pay for cleaning, deodorizing, and repairs. Long-term damage from smoking tobacco in your own home is not covered. Your own policy is what decides it.
The U.S. Fire Administration recommends calling your insurance company right away and asking what to do first, confirming whether you or your insurer will pay for cleaning, getting cleaning estimates in writing, and keeping every receipt. The Washington guide adds practical advice for the claim: photograph everything before you clean, keep damaged items until the adjuster has seen them, and ask for the attic, crawl space, insulation, and HVAC system to be inspected. If the smell or residue shows up again later, you can ask for a reinspection.
FAQ
Frequently asked questions
How long does smoke smell last in a house?
Do ozone machines get rid of smoke smell?
Will an air purifier remove smoke smell?
Can you paint over smoke damage?
Should I throw away food after a kitchen fire?
Does homeowners insurance cover smoke damage from a kitchen fire?
Is it safe to stay in a house that smells like smoke?
The takeaway
Smoke smell goes away when the residue holding it is removed: ventilate, lift soot without smearing it, wash or remove fabrics, and filter the air with equipment that does not produce ozone. A contained stovetop flare-up is usually a cleaning job. Smoke that spread through the house, or a fire the fire department put out, is a restoration job, and the first call is to your insurer.
Read how we handle fire and smoke damage restoration.
Keep reading
Sources
- NFPA: Home Cooking Fires (2017 to 2021 data, published 2023)
- Tennessee State Fire Marshal: Winter is Tennessee’s most dangerous season for home fires
- U.S. EPA: Ozone Generators that are Sold as Air Cleaners
- U.S. EPA: Wildfires and Indoor Air Quality
- U.S. EPA: Guide to Air Cleaners in the Home
- U.S. Fire Administration: After the Fire (FA-46)
- American Red Cross: Checking Your Home After a Fire
- USDA: Fires and Food Safety (via University of Tennessee Extension)
- Los Angeles County Public Health: How to Clean Up Smoke and Soot from a Fire
- Los Angeles County Public Health: Returning Home After a Fire
- Insurance Information Institute: Which disasters are covered by homeowners insurance?
- Washington State Insurance Commissioner: Smoke damage and your homeowner or renter insurance
- California Department of Public Health: Thirdhand Smoke in Multi-unit Housing