The short answer is: Nothing noticeable.
Ozone is always present in the air we breathe. It occurs in nature as a result of lightning strikes and other chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC) in the presence of sunlight. Emissions from industrial facilities and electric utilities, motor vehicle exhaust, gasoline vapors, and chemical solvents are some of the major sources of NOx and VOC.
Good Ozone
Called stratospheric ozone, good ozone occurs naturally in the upper atmosphere, where it forms a protective layer that shields us from the sun’s harmful ultraviolet rays. ozone.
Bad Ozone
Tropospheric, or ground level ozone, is not emitted directly into the air, but is created by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC). This happens when pollutants emitted by cars, power plants, industrial boilers, refineries, chemical plants, and other sources chemically react in the presence of sunlight. Ozone at ground level is a harmful air pollutant, because of its effects on people and the environment, and it is the main ingredient in “smog.”
While our treatment does produce ground level ozone, it is no more a source of pollution than other common home maintenance activities such as using gas powered mowers and weed-eaters; driving your gas powered vehicle to the hardware store; or even using electric powered tools, as most of the electricity we consume results in the generation of pollutants.
Ground level ozone can be harmful as an irritant to people, pets, and plants. It also degrades other natural materials such as rubbers, woods, and leathers. However, given that ozone is always present in the air, it is impossible to attribute any harmful effects as a result of one of our treatments. So to avoid using our service for fear of harmful affects, would be like avoiding mowing your lawn with a powered lawn mower for the same reason.
Ozone is second only to fluorine as the most powerful oxidant in the world. It’s the most powerful natural air and water sanitizer available. It’s used by hospitals, law and fire departments, and in locker rooms around the world. So if you have bacterial, virus, or odor concerns, why wouldn’t you use it?
Source: www.epa.gov