Odor removal after a death

What this involves

Many people call about odor weeks after a death, once the obvious cleanup has been done and the smell has not gone. Decomposition odor is caused by compounds released by the body and the fluids that left it. These soak into the materials closest to where the person was, then travel through the air into soft goods, ceiling texture, cabinets and the return side of the HVAC system. Odor that survives a cleaning almost always means some contaminated material is still in place, such as subfloor under new flooring, the back of baseboard, or the bottom of a wall cavity. Odor can also come from belongings that were moved to another room or into storage, such as a recliner, rug or bedding, so the search sometimes extends beyond the original room.

Why professional remediation matters

Odor removal is mostly detective work. It means tracing the path fluids took, removing what is still contaminated, and then treating the air and remaining surfaces. Fragrances only cover odor. Ozone generators are sometimes used in unoccupied spaces, but EPA warns that ozone is a lung irritant and that ozone generators are not effective at levels safe for people, and ozone cannot reach odor that is still locked inside materials. Without source removal, odor usually comes back as temperature and humidity change.

What to avoid before help arrives

• Do not lay new flooring or paint over an area that still smells. It traps the source and makes later removal more expensive.
• Do not run an ozone machine in an occupied home, or with pets or plants inside.
• Do not keep running the HVAC system on an affected unit; it spreads odor to other rooms.
• Do not throw out belongings that matter to you because of odor before asking whether they can be treated.

How the work is done

1. Odor history. We ask what happened, what has already been cleaned or removed, and where the odor is strongest and when.
2. Source tracing. We inspect flooring, subfloor, wall bases, furniture and HVAC returns to find remaining contaminated material.
3. Source removal. Contaminated sections are removed and packaged; anything still saturated with fluids is handled as medical waste.
4. Treatment and sealing. Exposed structure is cleaned, disinfected and, once dry, sealed with an odor-blocking primer.
5. Air and HVAC. Air filtration is used during and after the work, and accessible HVAC returns and filters are addressed.
6. Odor check. We check the space again after it has been closed up, since odor tends to show up after a few hours.

Waste handling

Materials that still hold bodily fluids are handled as regulated medical waste. Materials affected only by odor can usually go to ordinary disposal; we explain which is which.

Afterward

Once the source has been removed and the structure sealed, the space can be rebuilt. If a previous company already worked on the property, keep their paperwork; it helps show what was and was not removed. Before re-letting or listing a property, owners often want a second check after the unit has been closed up for a day or two, since that is when any remaining odor is most noticeable.

Rules that apply in Tennessee

• OSHA Bloodborne Pathogens Standard 29 CFR 1910.1030 · checked 2026-11-03
• Tennessee medical waste definition (solid waste rules) TDEC Rule 0400-11-01-.04 (medical waste provisions) · checked 2026-11-03
• OSHA Respiratory Protection Standard 29 CFR 1910.134 · checked 2026-11-03

Where we provide this service

Throughout our Middle Tennessee service area, including:

• Nashville
• Murfreesboro
• Clarksville
• Franklin

Related

• Unattended death cleanup
• Mattress and furniture biohazard removal
• Animal remains removal and odor cleanup

Questions