> There has never been a recorded case of a virus evolving a completely new transmission mode.
Keep in mind that there's a lot that we don't know Ebola and how it behaves in different hosts. For all we know, it may be able to spread via aerosols in its origin host, but doesn't bind well to cells in the human upper respiratory tract.
> We have never seen a virus that wasn't previously airborne "go airborne", and we have have no evidence that Ebola can be transmitted this way right now.
We've seen this for avian Influenza A. Herfst et al. did a mutation/serial passage investigation with avian H5N1 that gained the ability to spread through aerosols among ferrets.
Will Ebola gain this ability? Nobody knows. Is it possible? Possibly. How likely? Unknown. Should we panic over it? Like you said, not at the moment.
Keep in mind that there's a lot that we don't know Ebola and how it behaves in different hosts. For all we know, it may be able to spread via aerosols in its origin host, but doesn't bind well to cells in the human upper respiratory tract.
> We have never seen a virus that wasn't previously airborne "go airborne", and we have have no evidence that Ebola can be transmitted this way right now.
We've seen this for avian Influenza A. Herfst et al. did a mutation/serial passage investigation with avian H5N1 that gained the ability to spread through aerosols among ferrets.
Will Ebola gain this ability? Nobody knows. Is it possible? Possibly. How likely? Unknown. Should we panic over it? Like you said, not at the moment.