The treatments you are most likely to see
- Thermal fogging
- A deodorizing solution is heated into a fine fog that drifts into cracks and porous materials much the way smoke did. It usually requires the home to be vacant, smoke alarms to be managed, and good ventilation afterward.
- Hydroxyl generator
- A machine that uses ultraviolet light to create short-lived hydroxyl radicals from moisture in the air, which react with odor molecules. Generally described as compatible with occupied spaces but slow, often running for days.
- Ozone generator
- Produces ozone gas to oxidize odor compounds. Effective at high concentrations but a lung irritant that requires a vacant, sealed space and can harm rubber and some fabrics.
- Chlorine dioxide
- An oxidizing gas used in some odor treatments, released either as a gas fill in a vacant space or slowly from packets or gels. Handling and re-entry instructions matter.
- Encapsulating sealer
- A primer or coating, often shellac-based, that locks residue under a film. A surface step, not an airborne one, and usually the last stop before paint.
- HEPA air scrubber
- A fan unit with a high-efficiency particle filter. Useful for dust and ash during cleaning, but the filter does not capture odor gases unless paired with activated carbon.
Side by side
- Treatment
- Thermal fogging
- Occupants out?
- Yes, during and after
- Reaches into materials?
- Yes, that is its purpose
- Removes the residue?
- No
- Treatment
- Hydroxyl
- Occupants out?
- Often not required; ask
- Reaches into materials?
- Slowly, through the air
- Removes the residue?
- No
- Treatment
- Ozone
- Occupants out?
- Yes, plus airing out
- Reaches into materials?
- Yes, at high levels
- Removes the residue?
- No
- Treatment
- Chlorine dioxide gas
- Occupants out?
- Yes, for a gas fill
- Reaches into materials?
- Yes
- Removes the residue?
- No
- Treatment
- Encapsulating primer
- Occupants out?
- During application only, for fumes
- Reaches into materials?
- Seals the surface
- Removes the residue?
- No, it traps it
- Treatment
- HEPA with carbon
- Occupants out?
- No
- Reaches into materials?
- No
- Removes the residue?
- No, it filters air only
Why every row ends in no
The last column is not a trick. Tobacco residue is a physical film, and the only ways to get rid of it are to wash it off, take away the material it is on, or bury it under a sealer. Airborne treatments are there to reach the odor that cleaning cannot touch: the inside of a wall cavity, the fibers deep in a sofa, the back side of trim.
That is why the order matters so much. A fogging or gas treatment done before cleaning spends itself on surfaces that were about to be scrubbed anyway, and the smell often returns as soon as the treatment wears off. Done after cleaning and soft-goods removal, the same treatment has far less to work against.
For a condo or townhome in Cherry Creek, the choice between these treatments often comes down to building rules, how long you can stay out, and what is in the unit. A gentle method that can run while you live there may suit a renovated unit with new finishes; a stronger method may make sense for an empty estate house before the painters arrive.
General information for Cherry Creek, not a quote or professional advice. In an emergency, call 911.