Very interesting indeed.  Spendulus actually IMO hit upon a cutting edge topic in virology.  It's not well understood how viruses can spread.  For example, Magic Johnson's wife never caught HIV/AIDS even though she had unprotected sex with her husband for a long time.  And regarding Ebola, all the researchers were wearing 'bunny suits', and every incentive to be careful, and were trained nurses, yet caught the virus.  The discoverer of Ebola, a Belgian doctor, said something like if you rub your eyes when taking off your protective goggles, you can catch the virus, but I would bet valuable BTC that some of the nurses did not rub their eyes.  I think what Spendulus says is the key:  microdroplets.  And I bet (or hope) some researcher in the field at CDC and elsewhere is thinking the same thing.