Agree. I got a CO2 monitor for my office a few ago and it was a real eye-opener.
It has made me notice "stuffy" air more keenly and helps me avoid it. If I'm stuck in a physical meeting room at work I take lots of walks and breaks. etc.
I haven't tried the CO2 sensor in the bedroom. We like to sleep with fans on and the bedroom door open, which I suspect helps somewhat (depending on how drafty one's house is overall) although is obviously not as effective as having a window open.
It has made me notice "stuffy" air more keenly and helps me avoid it. If I'm stuck in a physical meeting room at work I take lots of walks and breaks. etc.
I haven't tried the CO2 sensor in the bedroom. We like to sleep with fans on and the bedroom door open, which I suspect helps somewhat (depending on how drafty one's house is overall) although is obviously not as effective as having a window open.