Ozone generators are for use in unoccupied spaces and not running when people or pets are present. So vacate the entire area during treatment. While O3 is a powerful oxidizer that will eliminate odors, long-term exposure is not recommended by government agencies because it can contribute to eye and respiratory irritation.

These are valid safety concerns because the ozone breaks apart molecules as part of the oxidation process, especially odor causing molecules. However, humans and pets are also made up of molecules, so ozone has the potential to irritate the eyes and respiratory system. Those with asthma, COPD or other respiratory issues should consult their physician before use.