Transmission of coronavirus can occur via respiratory droplets from coughs and sneezes. What happen to the virus when its airborne carrier droplet becomes completely evaporated in the air prior to reaching a solid surface?
Please have a look at these helpful links to know the answer to your important question:
1. Article Evaporation and dispersion of respiratory droplets from coughing
2. Article Spreadsheet Model of COVID-19 Transmission: Evaporation and ...
3. Article Physico-chemical characteristics of evaporating respiratory ...
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