If I need to wear a hazmat suit with a respirator/breathing apparatus into the hospital, I'd probably do it! I wore a respirator before in EMT training, and you can breath easily in them for half an hour before the air runs out. Nurses would fair much better in them than those dumbass double masks and head gear if they wore them in quarantined areas. Also, it would be good to stockpile them every 10 years or so just in case we get a real pandemic or a chemical attack.