Marketing Challenge #194782

http://www.google.com/patents?id=J040AAAAEBAJ&dq=4320756

Okay, there’s good news and bad news. The good news is that we’ve found a safe source of fresh air for people trapped in high-rise hotel fires. The bad news is that they have to feed a breathing tube into a vent pipe in the sewer line.

William Holmes’ 1981 brainstorm probably would have saved many lives, but even a guest surrounded by toxic smoke has some natural squeamishness.