In Black River Falls the non infected people could be around the infected people but if they were too close to them they could get it. So they used gas mask to be close to the infected people. It was an air born illness so that why they used gas mask.
-I've looked at clouds from both sides now From up and down, and still somehow It's cloud illusions I recall I really don't know clouds at all -Moons and Junes and Ferris wheels The dizzy dancing way you feel As every fairy tale comes real I've looked
cumuluslife: ““… we are the dreamers of dreams, Wandering by lone sea-breakers, And sitting by desolate streams. World-losers and world-forsakers, Upon whom the pale moon gleams; Yet we are the movers.