Fragrance notes are a complex and surprising thing. If a fragrance isn't very linear, the accord you get can be totally different than the sum total of its parts, and perfumers are often given to lavish, overstated descriptions of their ingredients. (How does Indonesian vanilla smell different from Tahitian vanilla if they're the same plant species, exactly?) I've gathered up five super-popular perfumes you've almost certainly smelled (or owned) at some point. Can you guess the notes, or are they as elusive as a whiff of fragrance? Take my quiz and see what your favorite scents are really made of.