Air purifiers may do more harm than good in confined spaces with airborne viruses

A computation shows air purifiers in elevators and other confined spaces can actually increase saliva droplet dispersal, spreading COVID-19. The positions of air inlets and outlets in confined spaces, such as elevators, greatly affect airborne virus transmission. In Physics of Fluids, by AIP Publishing, researchers from University of Nicosia in Cyprus show while air purifiers would be expected to help, they may actually increase the spread.

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