If I can wear a respirator to sleep for 7–8 hours a day, you can wear a respirator for ~20 minutes in the grocery store and for the ~3 hours you spend at a theatre/concert venue and your mass transit commute and the several hours you spend at sci-fi conventions to meet famous elderly people and in the waiting rooms for medical appointments and at church and the boring work conference your boss sends you to and the protests and on your flights and in the airports and the local street festival and
