Does intentionally sniffing a foul odor from the anus, or sniffing a foul-smelling armpit, invalidate one's fast? And if it does, what is its expiation?
Intentionally sniffing foul odors does not invalidate the fast, because a scent does not have a physical body that enters the cavity. Scents in general—fragrant or otherwise—do not break the fast.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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