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Perfume are composed of chemical substances. The classification of odors has lengthy been mentioned, and completely different classifications have been proposed, however not one of the but proposed odor preparations has gained huge acceptance or empirical affirmation. The explanation for that is that we’re nonetheless taking small steps in understanding the notion of odors. The olfactory notion at molecular degree and the identification of the receptor cells had been distinctive landmarks on this area (Buck and Axel, 1991; Turin, 2002, 2005), although the bridging between fragrances and perceived sensations usually are not but developed.
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