Israeli air conditioning company Tadiran has developed an air purifier that kills 99.999% of germs, bacteria and viruses including SARS-COV-2 that causes Covid-19. The “Air Care 02” system converts air moisture to hydrogen peroxide, which eradicates the pathogens.

https://www.jpost.com/health-science/israeli-air-conditioner-kills-9999-percent-of-germs-viruses-in-enclosed-spaces-655001