Mentioned it in the other thread on the other board, but we had an HVAC tech in Friday who was young and unmasked. It turned out to be delayed thermostat damage from a lightning strike back a few months ago. I just didn't think to suggest a mask. He came back yesterday to install it and I asked him to wear a mask and he did. Both times, he used the "have a blessed day" remark, to me and also to my wife. I told her that the good thing was he probably wasn't hanging out in bars; the bad was that he was going to church...