Published by Odotech at November 1, 2012 For many years neuroscientists have worked in order to determine the basic dimension of odors, or, in other words, to find out in which basic categories we can divide odors into and how we can smell. Sometimes it is helpful to look around a bit, as the world sometimes provides us with wonderful ideas. We can look at perfumers, which are specialists from the point of view how we perceive odors. They use four basic categories for odors. They divide fragrances into the categories “woody”, “fresh”, “oriental”, and “floral”.