Eau d'Snail was a Ferengi perfume, at one time the most popular on all of Ferenginar.

When Nix's wooly slug herding business was endangered by a snailosaurus, a Ferengi known as "the Slugboy With No Name" offered to help, and demanded several gallons of Eau d'Snail (in addition to other supplies) in order to do so. "NoName" soon disappeared with these supplies. Eight months later, a clothing business called "Clothing by ?" opened, selling wooly slug sweaters scented with Eau d'Snail. (DS9 reference: Legends of the Ferengi)