Olfactophilia

Olfactophilia (also osmolagnia) is intense sexual arousal from smells — especially natural body odors. The turn-on most often centers on the scents of intimate areas (genitals, sweat, skin, sometimes feet or worn clothing), where a partner's personal smell becomes a powerful erotic trigger. It taps into the deep, primal link between scent, memory, and attraction. It ranges from simply loving a lover's natural smell to a dedicated fetish for specific odors. It overlaps with mysophilia, sweat play, and used-item fetishes.

Smell is wired straight into the brain's emotion and memory centers, so a partner's natural scent can trigger arousal faster and more viscerally than sight or touch. There's deep, animal intimacy in being drawn to someone's raw, unmasked odor.

It might mean burying one's face in a partner's neck, armpits, or crotch to breathe them in, savoring worn clothing, or getting turned on by sweat during sex. Skipping perfume or heavy washing to let natural scent come through is common.

Low-risk. Basic genital hygiene still matters, and if smelling shades into oral contact the usual safer-sex caveats apply. Worn items from others carry standard hygiene considerations.