Have you ever walked down the street and you suddenly stop in your tracks because you encounter a familiar fragrance? Perhaps a scent wafting in the air reminds you of the memory of your first kiss? Or the whiff of baby powder immediately takes you back to a beautiful newborn? Do the iconic perfumes of Chanel #5 and Shalimar remind you of your grandmother? This has happened to me several times where I live in Manhattan, and every...