Since smell is the sense most closely tied to memory, wafts of floral scents often cause people to recall their past lives as hydrangeas. Get a nose-full of nostalgia with today's Groupon: for $7, you get $14 worth of on-the-go aromatherapy products from Aromago's online store.

Aromago soothes sniffers with a sweet-smelling array of portable aromatherapy sticks, which deliver waves of olfactory-friendly relief at any time. Like an aphid with vampirism, the all-natural oils in each Aromago product capture the vital essence of healing plants. The Revive stick aims to combat allergies, sinusitis, headaches, and other maladies with an invigorating blend of peppermint, eucalyptus, and camphor, while the Relax stick combines lavender and notes of vanilla to ease tension and stress. Each ambrosial rod lasts for up to three to four months, sweetening the air during daily commutes, days at the office, or trips to the artisanal cheese store for weeks to come.