Some odors just won't quit. Smoke that soaked into drywall, a musty basement suite, a unit a previous tenant left in rough shape — no amount of scrubbing or air freshener fully clears them, because the smell is coming from molecules embedded in the space itself. This is where commercial ozone treatment comes in. Here's how it works, what it's good for, and how to use it safely.
What ozone treatment actually does
Ozone (O₃) is an unstable form of oxygen with three atoms instead of two. That extra atom makes it highly reactive: as ozone circulates through a sealed space, it oxidizes the compounds it contacts — odor molecules, bacteria, viruses, and mould spores — breaking them apart rather than covering them up. When the treatment ends, the ozone reverts back to ordinary oxygen, leaving no spray, film, or chemical residue behind.
That's the key difference from air fresheners and masking agents: those add a stronger smell on top of the problem. Ozone destroys the source, so once the space is aired out, it's genuinely neutral.
What it's used for in facilities
- Smoke and fire odor — cigarette smoke, kitchen fires, and post-fire restoration.
- Musty and mould-related smells — basements, damp storage, and areas treated after remediation.
- Biological odors — the kind left behind in neglected units, washrooms, or after a cleanout.
- Cooking and grease odors — restaurants, break rooms, and commercial kitchens.
- Vacancy and turnover — resetting a unit, suite, or office to neutral before the next tenant.
- Vehicles and fleet — cabs, interiors, and transport units that carry lingering smells.
The safety part — why it's done in empty spaces
Ozone is effective precisely because it's reactive, and that same property makes it a respiratory irritant. For that reason, ozone treatment is only ever done in unoccupied, sealed spaces — no people, pets, or plants present during the cycle. Afterward, the area is ventilated and the ozone allowed to break back down to normal oxygen before anyone re-enters.
Done correctly by trained operators following proper protocols, it's a safe, well-established method. Done casually with a consumer machine and no ventilation plan, it's a health risk — which is exactly why it's worth having a professional handle it.
When to call for ozone treatment
- An odor persists after a thorough clean.
- You're turning over a unit and want it truly neutral, fast.
- You've just completed water, smoke, or mould remediation.
- A vehicle or piece of equipment can't shake a smell.
Ozone treatment isn't a replacement for cleaning or remediation — it's the finishing step that handles what cleaning can't reach. Paired with a proper clean, it's one of the fastest ways to make a space feel genuinely fresh again.
Need a stubborn odor gone for good?
E&S provides professional ozone treatment and deodorizing across Edmonton, Fort Saskatchewan, St. Albert, Sherwood Park, Leduc, and Red Deer — for units, offices, restaurants, and fleets.
Explore Ozone Treatment