I "fixed" a problem with the vents in our bedroom last night. By problem I mean there were two and it was hot as hell in there, and by fixed I mean I figured out how the previous person MacGyvered the first vent and then MacGyvered it again to close it off.
Fortunately, the heat was on so the house didn't freeze. Unfortunately, the heat was on, so I got a face-full of hot, dry air the whole time I was "fixing" the vent. 12 hours later, my head feels like God is crushing it in an invisible vice.
MacGyver wouldn't have had this issue