Odor Removal

Professional odor neutralization for smoke, biological, chemical and unknown odors.

3028certified firms
257cities with 3+ certified firms
52states covered

Persistent odors have a physical source. Certified odor control locates and treats the source rather than masking it.

Browse Odor Removal by state

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fewermore firms★ licenses mold work
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Alabama31 firmsAlaska12 firmsArizona64 firmsArkansas25 firmsCalifornia354 firmsColorado88 firmsConnecticut28 firmsDelaware13 firmsDistrict of Columbia1 firmsFlorida196 firmsGeorgia147 firmsHawaii11 firmsIdaho37 firmsIllinois97 firmsIndiana66 firmsIowa33 firmsKansas30 firmsKentucky27 firmsLouisiana28 firmsMaine7 firmsMaryland98 firmsMassachusetts39 firmsMichigan142 firmsMinnesota37 firmsMississippi10 firmsMissouri57 firmsMontana25 firmsNebraska20 firmsNevada39 firmsNew Hampshire9 firmsNew Jersey68 firmsNew Mexico11 firmsNew York100 firmsNorth Carolina131 firmsNorth Dakota6 firmsOhio92 firmsOklahoma30 firmsOregon45 firmsPennsylvania105 firmsRhode Island21 firmsSouth Carolina53 firmsSouth Dakota10 firmsTennessee92 firmsTexas185 firmsU.S. Virgin Islands1 firmsUtah38 firmsVermont5 firmsVirginia117 firmsWashington84 firmsWest Virginia8 firmsWisconsin49 firmsWyoming6 firms

Largest markets

Las Vegas, NV23Houston, TX18San Antonio, TX18Denver, CO18Phoenix, AZ17San Diego, CA16Tampa, FL14Riverside, CA14Indianapolis, IN14Colorado Springs, CO14Jacksonville, FL13Charlotte, NC13Sacramento, CA12Orlando, FL11Raleigh, NC10Ronkonkoma, NY10Austin, TX10Portland, OR10Mesa, AZ10Baltimore, MD9Tulsa, OK9Nashville, TN9Miami, FL8Bakersfield, CA8

How to get rid of smoke smell in a house

Odour survives when its source survives — residue held in porous materials, inside wall cavities, or circulating through the HVAC system. Masking agents and ozone treatments applied without removing that source suppress the smell temporarily and it returns. OCT, the Odor Control Technician certification, covers identification and neutralisation of odours from fire, water, biological and chemical sources, and it is the credential to look for on this work.

Odor Removal: the questions worth asking

What causes an odour to persist after cleaning?

Odour survives when its source survives: residue in porous materials, inside wall cavities, or in the HVAC system. Masking agents and ozone treatments applied without removing the source suppress the smell temporarily and it returns.

Which certification covers odour work?

OCT — Odor Control Technician — covers identification and neutralisation of odours from fire, water, biological and chemical sources.

Answers reference the IICRC S500 and S520 standards and each state's own licensing statutes. We publish no cost estimates and no ratings — we hold no verified source for either. How we verify →