Is the Smell of Ozone Dangerous?
To state the issue properly, there are two sides to the question of the smell of ozone. There is the concern for ozone DURING an ozone application, and another aspect for the lingering ozone smell AFTER the room air has been normalized.
Ozone is constantly in our air because it is produced by the intersection of sunlight with oxygen in our atmosphere. It is what might be termed a minor or rare gas as it is usually present in a small percentage of the total gases that we breathe. But, ozone levels can vary. On a very hot and sunny day, the ozone levels can increase. Since ozone is considered reactive, people with respiratory problems are told to avoid lengthy outings on high ozone days.
Don't be too concerned though. Ozone will revert back to O2 breathable oxygen when the sun goes down. It is also helpful to know that the ozone is attempting to cleanse and detoxify our world. Pollution is the real enemy we face in the outside, and even inside, environment. While ozone neutralizes many pollution threats, pathogens, or fetid threats; ozone can sometimes compound the pollution problem as it tries to cleanse our world.
One of the fundamental rules for ozone treatments is that people and pets need to vacate the treatment area because high ozone levels are a respiratory threat. Use of ozone generators in the workplace must be monitored to keep ambient ozone levels at an acceptable, lower level.
Turning to the post-ozone concern, the smell of ozone may persist for 12-24 hours after the treatment. But after ventilation with fresh air the active ozone levels normalize. The lingering ozone smell is about the same value as the smell left behind by any cleaning product. The ozone treatment has changed the environmental threat by a process of oxidation. The post-ozone smell is enjoyed by some and not enjoyed by others. Regardless, the concern for ozone threat is not a true concern.
The unaddressed issue after an ozone treatment is the health, sensitivities, and vulnerability of the person. Sadly, we know that some people are ultra-sensitive to environmental threats that others easily ignore. And, it may be advisable that those with serious medical issues, respiratory problems, and chemical sensitivities explore other natural solutions.
In the vast majority of cases, ozone is a consistent value to treat odor problems, mold treatment, sanitizing, and treating common environmental problems. It brings in no new chemical ingredients and leaves no residue. As a product composed strictly of oxygen, ozone deserves the respect of a positive contribution to a healthier world.
As a final note, do not use ozone for long period unless professionally advised. Ozone treatments of 1 to 4 hours seem to be the best first step. Over-treatment with ozone can embed the ozone smell for much longer than the standard 12-24 hours. Those who understand odors and other environmental threats know that treatments of one to two hours can be quite effective; and if the problem persists, a second treatment will solve the problem without a lingering ozone smell.