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Some perfumers can distinguish individual odors in a fragrance made of hundreds of scents; teaexperts have been known to sniff out the exact location of a particular tea; and the NYC Transit Authority once had a employee responsible only for sniffing out gas leaks. But can anyone learn to smell with the sensitivity of those experts? Alexandra Horowitz shares three simple steps to a better nose.

Lesson by Alexandra Horowitz, animation by Black Powder Design.