airPHX units create a number of oxidizing molecules to clean the air and surfaces in your gym. These molecules float through the air to kill germs, VOC's, and odors in the air and on surfaces. The only oxidizing molecules to exit the airPHX unit are trace amounts of gas-phase H202 at levels well below the OSHA 8 hour exposure limit. Even at such trace levels, H202 is a highly effective disinfecting agent. The H202 Safety Data Sheet can be found here.