Trace amounts of ozone are formed by the sun and by lightning. Ozone cannot be stored or transported because of its unstable tendency to break down quickly, so ozone must be generated on site.

Because gaseous ozone is highly reactive, it readily oxidizes (breaks down) organic matter.  When the ozone encounters another compound, one oxygen atom will break away, attach itself to the compound, and oxidize it.  Ozone actually breaks down odor-causing compounds, thereby eliminating the odor and changing the ozone back to oxygen (O2).

Ozone acts 3000 times faster than chlorine as a bactericide, and it is the strongest oxidant commercially available for air & water treatment.
One of the best features of ozone is its ability to control odors by attacking the offending organisms.

HOUSEHOLD ODORS…
One of the most powerful and effective eliminators of smoke and a myriad of other odors is ozone. Ozone Generator machines utilize ozone to destroy tobacco smoke and its inherent impurities plus odors from pets, cooking, mold, mildew and other household sources. Elimination of these hazards provides a much healthier atmosphere and a more comfortable living environment.

INDOOR AIR POLLUTION…
Indoor air pollution is recognized as one of the major health concerns facing the nation today. This condition has been created by the search for more energy efficient buildings, work places. Through the use of an Ozone generator we can dramatically reduce the pollution contamination, creating a much safer atmosphere indoors. Restaurants, lounges, beauty shops and many other public areas can be cleansed of odors by destroying the source with ozone.

Ozone Generators do NOT put out a high level of nitrogen oxide, as some manufacturers wrongly claim. But they do put out O4, O5, and so on, as well as O3, and millions of negative ions as a by product. These all help to clean the air. 

The Food and Drug Administration has just amended its food additive regulations to permit ozone use as an anti microbial agent. The amendment, published in the Federal Register on June, 28 2001 allows for ozone use in gaseous and aqueous uses, and for safe and effective anti microbial treatment of meat, poultry, and other food products.

Tests have shown that common household bacteria, mold, mildew, and fungus are greatly reduced by the addition of as little as 50 ppb of ozone in typical household environments. Specifically but not limited to; E-Coli, Salmonella Choleraesuis, Staphylococcus Aureua, Candida Albicans, and Aspergillus Niger have been shown to have dramatic reductions in population in independent laboratory tests. 

The U.S. Environmental Protection Agency, in conjunction with the Safe Drinking Water Act of 1991, confirmed that ozone was effective in ridding water of hazardous pathogens, including chlorine resistant Cryptosporidium.”  Agricultural Outlook, June/July, 1998.

HOW DO I SET THE OZONE LEVEL AND WHERE DO I PLACE THE UNIT?
Set ozone to a setting where you can barely detect ozone after an hour of operation.
If ozone is still detected in 15 minutes reduce ozone setting, if the disagreeable odor is still prevalent, increase ozone setting. Properly adjusted, neither ozone or the objectionable odor should be detected.

Air circulation is an important factor in how effective ozone works. An oscillating fan can be placed next to generator for proper circulation.
The unit should be mounted high in the room, 6 to 8 feet off the floor pointing away from sensitive areas. When entering an enclosed area, ozone should be reduced.
It is not necessary that you even smell the sweet smell of ozone (compared to fresh country air following a thunderstorm) for it to be effective.

IS OZONE HARMFUL AND WHAT IF ANY ARE THE LONG TERM EFFECTS?
Ozone has been known for almost a century now, so quite a lot is known about it. Several regulatory agencies, including OSHA - Occupational Safety and Health Agency have stipulated that the safe allowable level of residual is .08 ppm. based upon the historical safety of ozone. Note that this permissible level is for continuous exposure throughout an entire 8 hour day for 5 days a week. If anyone is exposed to that concentration of ozone, it is usually as the by product of an industrial process like arc welding. The temporary affects of such a low exposure would range from headaches, to sore throats, irritation in the eyes, nose. In other words before ozone could  possibly have any unsafe effects, one would be greatly offended by it's odor.

 Ozone is safe because we notice it's unpleasant odor at very residual levels. By residual we mean, the amount of ozone that is produced in excess of the required amount to eliminate whatever contamination that may be present in the room. This equipment, when installed correctly will not exceed government guidelines for continuous safe exposure. Even if installed incorrectly, ozone provides its own protection, as ozone warns us in a manner similar to smoke in a room. Ozone does this by becoming so offensive at 1.5 parts per million that we would not be able to stay in the environment for more than a short period. 
This is much like what would happen if we entered a smoke filled room. However, while smoke might harm us, research has proven that such a limited exposure to such a low level of ozone that would irritate us will have no serious long term affect on us.

Each of us is exposed to high levels of ozone daily for short periods of time.
This happens when the weather forces the industrial gases to remain lower to the ground than is otherwise normal. This can result in ozone readings as high as 4 or 5 times the "regulatory" levels for continuous exposure with absolutely no adverse affects as our exposure is for such short periods, and the ozone itself decays back to normal oxygen rapidly. Note that no one has ever claimed a worker's related illness resulting from ozone exposure.