I saw this one, too. I marathoned a lot of episodes of Tom Scott and there's a lot of good stuff!
>>814>AC recycles airI don't know how it works at office buildings, but for homes air conditioning units are built outside so they can suck in and push out more air. If you have any trees nearby you need to clean up the pile of leaves that accumulates around them. This is also why everyone knows if a skunk went off within a few miles.
The video did make me breathe heavier both times I watched it...