I've got no idea if indoor air circulation has been mentioned as a problem, but it seems to me that if it hasn't, it should be prohibited.

I stopped into my watering hole the other night to say hello to a friend who I hadn't seen in too many months, and the host at the door scanned my temperature in a near outdoor vestibule after I'd just walked a half mile in low 60s weather, and he wasn't put off in the least by my 95.1º reading. Well, duh! If my body temp was truly 95.1º I'd have been on my way to the hospital suffering from hypothermia rather than in a saloon, and I was left wondering whether anyone in the entire place had actually had hir temp accurately checked.

The new Great Equalizer is the SEND button.

In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire