There must be something in the water — or should I say, in the eau — because three times in the past two weeks, I've been asked to explain the difference between an eau de toilette, an eau de parfum, an eau de cologne, and a perfume (or parfum). I am sure that some of you might ace this quiz with your eyes closed, but for those of you who are wondering how to make your way through a fragrance department, here's your chance to brush up on your ABCs of fragrance. Take this quiz to find out just how savvy a fragrance aficionado you really are!

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