^^Well, when I was a kid, some dude pulled the plug on himself, by opening up the gas, and just let the apartment fill up...
Naturally, he died, which was what he intended.
The thing is, at some point the gas level eventually reached the magical 4% (IIRC), and then his fridge must've started or something.
The result was that all the windows in the nearby apartments, need replacing, so I'd say that there's
a shred of truth -but nothing more, in #3 as well...
But, I'm sure it has taken quite some time before there was enough gas to result in a reason to replace the windows.
