Great job Peter, this is a really good way to document what is going on right now. In the field I work in we have to wear respirators all the time. We go through training and have to be fit tested annually on every respirator we wear plus we have to have an annual physical to make sure we are healthy enough. When I go out in public I can't help but notice how many people are wearing their respirators improperly or are using something that is completely useless as a respirator. I saw a guy wearing gauze over his face the other day, I could see his mouth through it. Plenty of people just not wearing them around here which is just disturbing to me. Proper respirator use seems obvious to me because of my training, I'm sure it's not obvious to most people. If I was to do an essay like this I would be documenting improper respirator use, people may not be as receptive to that. Most people in your photos are doing it properly.