I suppose they're now issued masks, it was different back then (40+ years ago).
Right. Ebola may not be “airborne”, but it is certainly mist-born. Walk into the mist from a cough or sneeze, take off the protective gear, brush back your hair then rub your eye, and you’ve now carried out a bodily fluid transfer.
Nonetheless, aside from very small numbers of people, the risk from the enterovirus is far, far worse.