Many residential and commercial HVAC systems and standalone air
purifiers use filters that contain a form of
antibacterial/antimicrobial chemical treatment (eg. Bionaire/Holmes
models use the Microban/triclosan treatments). Is the usage of such
chemicals on the filter surfaces truly safe for the inhabitants'
long-term health? Is there any risk of evaporation/transmission of any
of the antimicrobial chemicals into the outflowing air, and thus risk
of potential health risk due to the inhalation of these substances? Or
do these chemicals dissipate so quickly that there is ~zero net
chemical or evaporative outflow after a few days' worth of usage?

Thanks,

Michael