This story was originally published on The Conversation and appears here under a Creative Commons licenses. Most perfume ads suggest that the right scent can make you sexy, alluring and successful. A blend by Black Phoenix Alchemy Labs, meanwhile, offers to make you smell like Hecate, the three-faced Greek goddess of witchcraft. As a classics scholar who studies both magic and the senses in the ancient world, this idea of a witch-inspired perfume fascinates me—and “Hecate” is just one of many magic-inspired fragrances available today. What does a witch smell…