I agree. I am a medical technologist so I understand the way various diseases are transmitted. With Ebola, there is no danger to the public unless they are directly exposed to his blood or body fluids. Unless he was hemorrhaging as he walked into the hospital, that is unlikely to happen.
http://www.nature.com/srep/2012/121115/srep00811/full/srep00811.html
The question isn’t’ ‘airborne’. The only question is the size of droplet required to do the job.