🎓 Doc Freemo :jpf: 🇳🇱Gas flow will be very high so none of the examples you give will matter. Even if all that happens he will still have a lethal dose of N2.
Also N2 has sedative effects and there is no suffering when you have low but sufficient oxygene. So even in the worst case its sedative effects will slow breathing and result in the situation still killing him humanely.
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