How to Make a DIY Air Filter | Ask This Old House

An Investigation of Ozone Emissions From Consumer Products: [link] Ozone Generators that are Sold as Air Cleaners : [link] Ideally, don't use ozone-generating or other gimmicky devices. Ventilate the space instead. Usually, unless there is a high pollution event or it is peak allergy season, the air outside is lower in contaminants than indoor air. Vacuum frequently using a machine with a HEPA filter and run your home's air circulation system with a MERV13 filter, or get/make an air filter. ( [this video] ) If you feel you must use an ozone generating device, don't use it if the spaces are occupied and ventilate them thoroughly before occupying them again. Definitely don't use them along with other cleaning/deodorizing chemicals, as the result of mixing those with ozone is complex and poorly understood.