When masking was first being mandated, I watched a science-guy video as he demonstrated how to properly handle a mask, donning and doffing, shaping the nosepiec

When masking was first being mandated, I watched a science-guy video as he demonstrated how to properly handle a mask, donning and doffing, shaping the nosepiece, disinfection for reusable masks, etc. Then I saw reality, where a medical professional would politely remove her mask to sneeze.