Frederic Malle, the "perfume art director," gives us a crash course in fragrance production, from why certain scents cost so much to where the best tuberose in the world is grown. Plus: We play a word-association game and he tells us what happiness, love, and sadness smell like. Also in this episode: the story behind those sequins makeup artist Pat McGrath puts in all her packages; a warning (or two) about cosmetic fillers; and the nail decal that could save your life.