I abstain on voting because will not be posting till Tuesday, celebrating solstice. You can assume Isaiah cross the river to catch a breath in a less affected by gas he chose to inhale previously.
I think however it is now the question of choice but of utility: does anyone have means to stop gas? Perhaps need to ask DM if holding the breath would help to avoid poison. I can for example summon elemental who is immune to poison and lasts for an hour. He may be able to stuff the snake mouths with something, break them or anything. Maybe someone has a better "tool" ?
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