Understand your reasoning; however, when the mucosial membranes are agitated, as happens in most infections ( as with Ebola) an infected person will cough and sneeze as the body tries to clear pathways. Just understand that this disease, in early stages, mimics diseases like influenza and malaria....
I’m inclined to believe that there is risk to airborne transmission with Ebola, just not as much as with other diseases. It seems to preferentially attack the alimentary system.
Agreeing here with your most sensible post of all.