Quoting from the discussion section of this paper:<p>"Such data, obtained from experimental animal models, combined with the aerosol decay rates determined in this study, would suggest that filovirus, at infectious levels, may remain a potential aerosol
threat for at least one and a half hours. Epidemiological
evidence, however, would suggest that during outbreaks,
filoviruses are rarely transmitted by the airborne route."<p>A bit disconcerting.<p>Let's hope that the "epidemiological" evidence is again borne out.