Mtb. Airborne only means that the viruses are alive in saliva droplets. The size of the droplet determines the distance they can travel in the air. 6-20 feet. You can breath the droplets or they land on a surface and stay alive. Looks like ebola can stay alive 15-50 hours depending on the quality of the surface.
Buried within these ebola threads are articles and statements from leading medical experts supporting the fact that ebola is capable of airborne transmission. We are only safe if they can keep the US zero patient number very low and make an early detection. When it does come a whole lot of people will be detained.