If the infectious dose (i.e., number of virions/virus particles required for an infection) for ebola was high, the question of whether the ebola virus could travel through the air would be moot. However, the information currently available points to a low infectious dose for ebola (i.e., very few virions are required to cause an infection). Here is what the Public Health Agency of Canada states on their PATHOGEN SAFETY DATA SHEET - INFECTIOUS SUBSTANCES for Ebola virus:
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INFECTIOUS DOSE: Viral hemorrhagic fevers have an infectious dose of 1 - 10 organisms by aerosol in non-human primates
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Canada's Public Health Agency's Ebola Safety Data Sheet webpage It is quite possible that the listed infectious dose was extrapolated from other similar viruses, but if that's the best data we have, we have to go with that data until we have more/better data.
Thus, the concern about transmission through the air, even if a bodily fluid is required for transmission.
