Just saw Interstellar.
When Cooper gets his faceplate cracked and is disabled by the in-rush of ammonia atmosphere my suspension of disbelief broke.
Why?
Because for a small leak in a poisonous atmosphere you turn up suit pressure to above ambient. In fact it's a good plan to have your suit set slightly above ambient pressure just in case there is a puncture.
NASA's A7L had controls for suit pressure and it was intended for vacuum only.
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It might even be a good idea to have suits that are smart enough to know that for themselves and turn themselves up when they detect leaks. But the mental image of repopulating the Human race with Anne Hathaway makes up for it.
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