What separates a good perfume from a great one? The best perfumes for women are those that smell beautiful to you, have the power to evoke precious memories of people, places and things and as a result can evoke a range of emotions. And it's about science. "An odor is interpreted when an odor passes into the brain's olfactory bulb via the upper part of the nose. This information then goes to an area where emotions are processed, after which it is carried to the part of the brain where memory is formed." When choosing a fragrance, there are a...