From what I have read on this subject, the divide in  opinion is between scientists who have been able to demonstrate that it is possible for the virus to travel in aerosols for long distances, and epidemiologists who have been looking for and have yet to find any evidence that in fact it does travel long distances in aerosols. 
We know that measles for example does spread this way, and the evidence was clear long before demonstrations of how it travelled could be made, because people got infected just going into a room hours after a measles patient had been in it. This sort of infection does not appear to happen with covid-19, despite a lot of experience looking for it. The spread of the virus is stopped pretty effectively by protocols that would not work if aerosol propagation was commonly happening (which does not mean it does not happen occasionally).
Problem is that infection is not a simple process - for example, while in theory a single virus particle can infect you - but experience shows that it takes a lot of particles for you to have a significant likelihood of infection.
				
			 
			
		 
			
				
			
			
				John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
			
			
		 
	
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