Draeger gas pum and test tube for ozone (C) D FriedmanUse of Ozone Generators Indoors for Control of Odors & Mold Removal in Buildings
Hazards, False Claims, Overdosing & Oxidation

  • OZONE MOLD / ODOR TREATMENT WARNINGS - CONTENTS: Warnings About Using Ozone for Treatment of Indoor Air. What is Ozone - O3 Problems Encountered Using Ozone to Get Rid of Skunk, Indoor Odors, or Mold Smells?Ozone Hazards & Ozone Toxicity Levels. Oxidation of Building Carpets, Contents, Coatings from Ms-Use of Ozone Generators. Materials that May be Oxidized & Become Odor Sources from Excessive Ozone Treatment. Using Ozone Left a Smell in our Home. Use this Smell Patch Test to Track Down Ozone-Oxidation Problems. General Use of Ozone Generators nor Ozone Shock Treatments as a "Cure" for Building Mold or Odors is Not Recommended
  • POST a QUESTION or READ FAQs about using ozone generators to kill odors or mold: dangers & false claims & about how to get rid of odors caused by ozone overdosing
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Ozone air treatment warnings:

Ozone has been widely used as a disinfection method for more than 100 years and has applications ranging from hospital disinfection to water treatment. However if ozone treatments are not properly matched to the application the results can be both ineffective and potentially harmful. This article provides government and other authoritative warnings about using ozone generators and ozone air purifiers in buildings to "purify" indoor air or to "kill mold" in buildings. We give a definition of ozone or O3, we explain what problems can arise when using ozone generators to try to get rid of odors indoors or to try to kill mold.

We explain the problem of oxidation of building materials from excessive ozone exposure and the horrible chemical smells that may follow such mistakes. We describe how to track down which building materials were over-dosed with ozone and are now giving off a new stink, and we explain how to cure that problem. (Note: other uses of ozone as a disinfectant can be effective and are important in many applications.)

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Warnings About Using Ozone for Treatment of Indoor Air: Respiratory System

Article Series Contents

General Use of Ozone Generators nor Ozone Shock Treatments as a "Cure" for Building Mold or Odors is Not Recommended

Watch out: Ozone is a highly toxic, oxidizing gas. It can be absorbed into the body via inhalation, skin or the eyes. It can also oxidize building materials. See the Ozone hazard and use warning articles listed at the end of this article.

Watch out: In-Home or "portable" ozone generators and industrial or "shock treatment" ozone generators not only fail to find and remove the source of mold or building odors, in addition ozone concentrations generated by ionic air purifiers can exceed (industrial) levels permitted by U.S. Environmental Protection Agency. This problem is more severe when

In addition, a ban of in-home ozone producing air purifiers was announced by the California Air Resources Board in September 2007. This law requires testing and certification of all types of air purifiers to verify that they do not generate excessive ozone.

See "Health Hazards of Ozone-generating Air Cleaning Devices", [PDF] State of California-Health and Welfare Agency, Department of Health Services, Indoor Air Quality Section

Research on Secondary Chemical-like Building Odors Following Over-Use of Ozone Generators in Buildings

Scholarly research cited here confirms our opinion that ozone treatments, particularly where over-exposed in buildings, vehicles or other enclosed spaces can create both health hazards to occupants and secondary chemical-like odors from the reaction of ozone with various furnishings, coatings, or other materials in buildings.

Reserarch is suggestive of the relationship between ozone treatments and both a preceived reduction in odors and (when over-used) the production of new "chemical-like" odors in buildings.

Remember that indoor temperature and humidity are important factors.

Although it was not focused on the oxidation effects of ozone on polyurethane coatings, there has been some research that confirms that polyurethane, the presumed coating on some wood floors, can be affected by ozone exposure. Other older floor coatings such as varnish or stain may also be affected by ozone treatments.

Ozone as Possible By-Product of Xenon Light Disinfection

This discussion has moved to a separate article. Please see XENON LAMP OZONE OUTPUT?


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