When three trades touch the same problem, misunderstandings happen in the gaps between them. The painter assumes the odor provider sealed the ceilings; the odor provider assumes the HVAC company cleaned the returns. Knowing the terms helps you ask who is doing what, and catch a scope that quietly leaves something out. Treatment terms such as thermal fogging and hydroxyl are covered on a separate page; this list focuses on residue, surfaces, coatings and the air system.
Residue and odor
- Thirdhand smoke
- Residue from tobacco smoke that settles on surfaces and in dust after smoking stops, and keeps releasing odor.
- Nicotine film
- The sticky, yellow-to-brown layer left on walls, glass and fixtures. Often used loosely for the whole residue, which also contains tar and other compounds.
- Off-gassing
- Slow release of odor or chemicals from a material into the air, faster when warm.
- Source removal
- Getting rid of the material or residue that produces odor, as opposed to treating the air.
- Masking
- Covering odor with fragrance. It hides the smell temporarily and does nothing to the residue.
- Bleed-through
- Stain or odor showing through new paint because the residue underneath was not removed or sealed.
Surfaces and coatings
- Stain-blocking primer
- A primer made to stop stains in the old surface from migrating into new paint. Not all of them block odor equally.
- Shellac-based primer
- A fast-drying primer using shellac resin and alcohol, widely used to seal smoke stains and odor. Strong fumes during use.
- Encapsulation
- Sealing residue under a coating rather than removing it, used for what cleaning cannot reach.
- TSP substitute
- A phosphate-free heavy-duty cleaner sold for washing walls before painting.
- Rebond pad
- Carpet pad made from bonded foam scraps, recognizable by its multicolored look. Very absorbent.
- Tack strip
- Wooden strips with angled pins around the room's edge that hold carpet; raw wood that absorbs odor.
Air system terms often mixed up
| Term | What it is | Why it matters for odor |
|---|---|---|
| Supply register | Grille where conditioned air enters a room | Odor strongest here points to the duct feeding that room |
| Return grille | Larger grille that pulls room air back to the furnace | Return ducts often hold the most residue |
| Plenum | Box-like chamber connecting the furnace to the main ducts | Collects dust and residue near the equipment |
| Air handler or blower | The fan that moves air through the system | A dirty blower wheel spreads odor to every room |
| MERV rating | Scale for how fine a furnace filter captures particles | Higher ratings catch more particles; check what your system can handle |
| Register boot | The short fitting between the duct and the register | Easy to miss when only the main lines are cleaned |
General information for Cherry Creek, not a quote or professional advice. In an emergency, call 911.