The Nitrogen Solution

From the ONT:

Again: never have nitrogen in an enclosed space -- there is no lead-up or warning, because it's 70% of air to start with. CO2 will cause panting and suffocation panic; helium will cause squeaky voices and other "WTF is going on?" phenomena.....but nitrogen is "clunk." YOUR SAFETY IS #1.
Posted by: cthulhu at February 02, 2014 07:19 AM (T1005)

This made me think of the ongoing debate about uncruel and usual methods of execution. Nitrogen is cheap & plentiful. Am I missing something here?

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