I worked all through this as well, in a medical setting (physical therapy) we contract to physicians groups, we have been extremely fortunate through all this.  But for some reason we just had to start wearing a mask last week, I keep it around my chin cuz it makes my glasses fog up, I only wear it when I do any close up manual work on patients.  No one seems to give a shit.  But yeah just wear it, and pull it down around your chin and breathe normally once and a while.