I also know people that don't own meters who think they're in stale air as soon as it gets a warm in a room and need to see an open window constantly

I also know people that don't own meters who think they're in stale air as soon as it gets a warm in a room and need to see an open window constantly and then turn up the heating some more Oh man, that seems really obnoxious. I don't even use an actual meter that way!