Do you do the biohazard cleanup itself?

No. We are an odor removal company only. A licensed biohazard or trauma cleanup crew must handle the physical and body-fluid cleanup and disinfection first. After that work is complete, we remove the lingering decomposition odor that remains in subfloor, walls, and the HVAC using green, non-toxic methods. We do not perform any biohazard or trauma scene cleaning.

Why does the smell remain after the cleanup company finished?

Decomposition odor travels through the air as fine compounds and absorbs into porous materials and the HVAC system, often well beyond the original spot. A cleanup crew removes the biohazard and disinfects surfaces, but odor that has soaked into subfloor, drywall, and ductwork is a separate issue. Clearing it takes different tools, which is the work we do.

Is the process safe and non-toxic?

Yes. We use only green, occupied-safe methods such as source removal, thermal fogging, hydroxyl generators, and HEPA with activated-carbon scrubbing, plus sealing where needed. We never use ozone or chlorine, and we never mask odor with fragrance. The aim is a home that smells like nothing, not one that smells covered up.

How fast can it be done?

Most odor removal jobs take one to four hours, and we offer same-day or next-day service in most cases. We are fully insured and stand behind the work with a 100 percent guarantee. If the odor is not gone, we are not done. We know these situations are time-sensitive and we move accordingly.

Removing Lingering Odor After an Unattended Death or Biohazard Cleanup

Specialty · By Odor Removal Experts · Updated June 2026 · Cleveland and Northeast Ohio

Losing someone is hard enough without the home still carrying a reminder of it. If a licensed biohazard or trauma cleanup company has already done the physical work, removed affected materials, cleaned and disinfected the scene, you may still notice that a heavy odor lingers in the air. That is common, and it does not mean the cleanup crew missed anything. Decomposition odor is made up of tiny airborne compounds that travel far beyond the spot itself, soaking into subfloor, drywall, insulation, and the home's ductwork. Surface cleaning, even when done thoroughly, cannot always reach where those compounds settle.

We want to be clear about what we do, because the distinction matters. We are an odor removal company. We remove the lingering smell that remains after a qualified biohazard or trauma scene cleanup has been completed. We do not perform biohazard remediation, body-fluid cleanup, or trauma scene cleaning ourselves. That work is handled first by a licensed crew trained for it. Once they are finished, we step in to clear the odor that is left in the structure, using green, non-toxic methods and a calm, respectful approach.

The short answer

After a licensed biohazard or trauma crew finishes the physical cleanup, decomposition odor can remain because fine airborne compounds soak into subfloor, drywall, insulation, and the HVAC. Clearing it takes source-based work: finding where the smell settled, thermal fogging, hydroxyl generators, HEPA and carbon scrubbing, and sealing surfaces that cannot be neutralized. Green, occupied-safe methods only, no ozone, no fragrance.

We remove lingering odor only, after a licensed biohazard cleanup.
Decomposition compounds soak into subfloor, walls, and the HVAC.
Source-based treatment neutralizes odor instead of masking it.
Green, occupied-safe methods, no ozone, no chlorine, no fragrance.

Why the smell stays after the physical cleanup is done

Decomposition releases a wide mix of volatile compounds into the air over time. Those compounds do not stay in one place. They move with the air in the home and they are drawn into anything porous nearby. The longer a situation went unattended, the further the odor traveled and the deeper it set.

Subfloor and floor joists pull the compounds in below the surface.
Drywall, baseboards, and trim absorb them.
Carpet pad, if it was present, holds them deep.

The HVAC system is a big part of why the smell seems to follow you from room to room. Whenever the heating or cooling runs, it pulls air across the affected area and pushes it back out through the ducts into the rest of the house. That means the return vents, the coil, the blower, and the duct walls can all carry odor long after the visible source is gone. You can clean every reachable surface and still have the system quietly recirculating the smell every time it cycles on.

This is the gap a cleanup crew is not always equipped to close. Their job is to safely handle and remove the biohazard, disinfect, and make the area safe. Odor that has off-gassed into the building's bones is a separate problem that calls for a different set of tools, which is the part we handle.

How we approach the lingering odor

We start with the source, not the air.

Locate the odor. Walk the home and find where the smell has actually settled, checking subfloor, framing, wall cavities, and the HVAC path.
Treat the source points. Seal or treat any porous material still holding odor where it is strongest, picking up from what the cleanup crew left behind.
Thermal fog. Carry a deodorizing agent into the same cracks and pores the odor traveled through, neutralizing it where it sits.
Run hydroxyl generators. Break down odor compounds safely in occupied spaces.
Scrub the air. Use HEPA and activated-carbon scrubbing to pull remaining particles and gases out of the air.
Seal what remains. Where odor has set into a surface that cannot be fully neutralized, seal it so it can no longer off-gas.

No masking, ever

We never use ozone or chlorine, and we never mask the smell with fragrance. The moment a cover scent fades, the underlying odor is still there. Our goal is a home that simply smells like nothing.

What you can expect from the process

Most odor jobs are done in one to four hours, and we offer same-day or next-day service in most cases because we understand families are often working against a difficult timeline, whether for a sale, a return home, or simply closure. We are fully insured, and we back the work with a 100 percent guarantee. If the odor is not gone, we are not done.

We treat every one of these situations with care. There is no judgment and no rushing you. If you would rather coordinate through a family member, an estate representative, a real estate agent, or the cleanup company that did the original work, that is completely fine and often how these go.

When the odor is cleared, the home should be ready for whatever comes next, living in it again, listing it, or handing it off. The point is that the smell no longer holds you to the hardest moment.

When to bring us in, and when to start with someone else first

Once the scene has been cleaned and cleared by a licensed cleanup crew, and you are left with a smell that will not leave, that is our part. You can reach out directly, or have the cleanup company or your insurer refer you. We are comfortable working alongside both.

Cleanup comes first

If a biohazard or trauma cleanup has not yet happened, that comes first, and it must be done by a licensed company trained and equipped for it. We are not that service, and we would point you to one before any odor work begins. Trying to address odor before the physical source is properly removed does not work and is not safe.