Use water based air coolers aginst Coronavirus
It is therefore recommended that instead of using central or local air conditioning in office water based air coolers (the traditional coolers we used before ac came to India) are used as they increase humidity and make the air moist.
If the air is too dry large droplets wont fall to the ground as easily but if their is moisture it would.
Humidity should be kept between 40% to 60%.
Have been researching this for a while and attached is the research I found of value.
All the best more