Purify the air through the HEPA filtering process

Can an air purifier catch the virus? To some extent, yes. An air purifier equipped with a High Efficiency Particulate Air Filter (HEPA) can capture a portion of virus-sized airborne particles. Once trapped, viruses cannot multiply on their own or remain contagious for long. It is important to remember, however, that no air purifier can completely protect you from a virus.

What is and how a HEPA filter works

Originally developed to support clean rooms for atomic energy development, the United States Department of Energy (DOE) created HEPA as a specification for suppliers of filtration products based on particle removal effectiveness (e.g. 99 , 97% at 0.3 microns and above). Filters form a mesh or screen that will block larger objects from their smaller holes by letting air through.
HEPA filters are a complex weave of tiny fibers that carry an electrostatic charge that attracts passing particles, more like a magnet than a net. The narrower the grating, the greater the likelihood of trapping ever smaller particles. All this is effective insofar as the air can be conveyed through an adequate quantity of filtering material without the possibility of circumventing the filter.