BBCNEWS BBC News December 1, 2021 10:48:00
There's evidence that the coronavirus can spread through tiny droplets floating in the air. when people cough, laugh, sneeze, even breathe. so intensive care doctor vilas had an idea. would off the shelf air purifiers stop the virus floating around a covid ward? the results were dramatic. they tested the air without the machines, first of all, and, for five days, they found tiny droplets of the virus floating around. then they switched the machines on and the virus went, for five days. then they switched them back off again and the virus came back. so, vilas, basically, this was a hunch, wasn'...
Source: archive.org