I heard a doctor on Cavuto yesterday named Dr. Jane Orient and she said the virus could mutate and become airborne. I cannot find the video on this but they are behind in posting the videos on Fox for some reason.
What exactly does airborne mean. It can be spread by coughing and sneezing. Essentially any exposure to bodily fluids which contain the virus. But airborne in that you can cat has it from just breathing in the same room, no.
Apparently It can also live outside a host for several days and be aerosolized by sneezing.
http://www.phac-aspc.gc.ca/lab-bio/res/psds-ftss/ebola-eng.php