If anyone wants a look into epidemiological tracing then this is good info. Just for clarification, they are not suggesting it is airborne in the classical sense. They are suggesting that respiratory droplets on the smaller spectrum in a presence of air conditioning or wind of a gentle and constant vector could act to transmit the respiratory droplets much further than typical, which suggests that indoor dinning is not without its risks, even if people are socially distancing. In this case, two people were infected from a distance downstream of the infected person--one by over 6.5 meters or 21 feet within five minutes.
https://jkms.org/DOIx.php?id=10.3346/jkms.2020.35.e415
