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Another Medrxiv preprint :( )
Pump the brakes on the "lives in the air" for hours thing -- that's in a very specific laboratory condition which is not met in real life. From t
he original preprint that is linked in your article (bottom pg 4 - top pg 5) Sorry for bad formatting below. Note that they call the novel coronavirus "HCOV-19" ... the one labeled SARS-CoV-1 is the 2003 SARS virus:
P
hotos of the type of machine used in the aerosol experiment.
...
It's not the virus "dies" in the air ... it's that gravity does its work and the virus falls to the ground or wherever. It's not like if a COVID carrier sneezed in a doorway at noon, and then you walk through that same doorway at 1 p.m. that there are still sneeze droplets in the air ready to infect you.