Patchouli
Patchouli is both a plant and an
essential oil derived from the leaves of that plant. The scent of patchouli is very strong, and some people find it offensive. It has been used for centuries in perfumes.
Patchouli oil and incense underwent a surge in popularity in the 1960s and 1970s, mostly by devotees of the free love and hippie lifestyles.