Ancient_Bags t1_j1c9qfz wrote
Reply to comment by trixayyyyy in Mars' ancient atmosphere may not have had much oxygen after all by pecika
Farts are flammable due to methane. Sulfur is more of an eggy smell. Leaking car batteries are a pretty potent example. Mountain homes with well water often have H2S (hydrogen sulfide) in higher amounts. This is what makes the water smell like absolute crap and taste awful.
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