It turns out it’s you who knows nothing.
Covid virus is spread mostly by water droplets and mostly not as an airborne virus….where it can’t survive long
Air conditioning makes air dry. Covid can’t survive very long in dry atmosphere.
Poor gas, thinks he knows something turns out not to know anything.
air conditioning jesus was that a stipulation that the pubs and restaurants must have air conditioning on i think you will find it wasnt but other measures where stipulated which would help carry any droplets throughout the room .
"Larger droplets settle quickly, whereas small airborne droplet nuclei are transported over longer distances by airflow (
22). The distance droplets traverse depends on how forcefully a person coughs or sneezes. Large respiratory droplets containing pathogens like influenza can travel approximately 6 feet when a sick person coughs or sneezes (
23–
25). The aerosol expelled from the mouth during a cough emerges not as individual droplets but as a jet with a leading vortex (
25) that has properties similar to those of a puff from a pressurized metered-dose inhaler (
26,
27) and can penetrate an impressive distance into the surrounding ambient air before finally dissipating (
28). Thus, emissions from coughs and sneezes contain droplets of various sizes suspended in a multiphase turbulent buoyant cloud (
29). Turbulence sweeps around smaller particles, and eddies within the cloud resuspend the particles so that they settle more slowly, with some particles traveling more than 8 feet horizontally through the air (
28,
29). Moreover, smaller droplets could spray 13–20 feet vertically in the air, which is theoretically high enough to enter and travel through ceiling ventilation systems in some buildings (
29)."
.
Most droplet transmission likely occurs at close range because of dilution and inactivation of viruses over longer periods and greater distances. In respiratory exhalation flows, the large droplets between 60 and 100 μm in size are expected to completely evaporate before traveling 2 m (
30). These large droplets are carried farther away when they are expelled at high velocity, such as with coughs and sneezes. The time it takes particles to fall to the floor depends on their size; for example, particles 100 μm in diameter take about 10 seconds, whereas 10-μm–diameter particles are estimated to take 17 minutes to fall to the floor, and 1- to 3-μm–diameter particles could remain suspended almost indefinitely (
31). Infectious droplets carried farther away by airflow from an air conditioner were suggested to have transmitted SARS-CoV-2 among diners at adjacent tables in a restaurant (
32)..
. Can you see that bit 17 MINUTES the droplets can remain airborne i guess you must think they do not travel throughout an establishment in that time or just shoot over everyones head as they are sitting down