Ask any Pagan what they enjoy about working with herbs, and chances are good they’ll tell you how much they love the smell. Herbs contain small glands that hold their essential oils, and when these oils are extracted they release scent molecules. The science of aromatherapy takes advantage of this natural phenomenon and expands it just a bit–because olfactory sensation stimulates parts of the brain connected to memory and emotion. Ever catch a whiff of a stranger’s perfume and suddenly be reminded of your aunt who passed away when you were twelve? Have you suddenly caught a touch of magnolia on the breeze, and remembered the time you and that…