A study about airborne viruses. And the great distances mentioned were 60cm and ten feet.
Where did you pull those numbers from?
The CDC long standing 3 foot droplet rule exceeds your posted 60cm or about 23in.
The new MIT studies prove that it is complex turbulent event that travels substantial farther than previous assumed and that the mixed particle sizes can an do coalesce and re-coalesce.
Take a look at one of the studies photo sequence.