WellisAir is not just an air purifier but is an air & surface disinfectant. WellisAir air purifier kills bacteria and viruses in the air and surface by spreading OH radicals in its disinfection range. It is an active disinfectant as it does not wait to reach the bacteria or viruses near the filter. The OH radicals start working instantly when any bacteria or virus enters its range. The OH radicals steal hydrogen from the virus surface to form H2O (water) which kills the viruses. The OH hydroxylRead less