This list will be updated as new information becomes available. Health Canada is concerned with the adverse health effects that may result from the deliberate exposure of the public to ozone from air cleaners that intentionally generate ozone gas.
Ozone is an irritant that can cause coughs, chest discomfort, and irritation of the nose and throat.
A risk evaluation by Health Canada concluded that the direct and purposeful generation of ozone in indoor occupied spaces should be avoided. Health Canada has received complaints from consumers of respiratory problems when using ozone generators. Persons with pre-existing lung diseases, such as asthma, are especially at risk and are warned not to use ozone generators in their homes. The units have one or more control knobs or switches on the front face and may have an ozone detector built-in. Health Canada advises owners of commercial ozone generators to discontinue use in indoor occupied spaces.