there are three hundred fifty different kinds each is specialized for certain smells. the odor information reaches the long term memory and has strong connections to emotional centers. whether or not we'd like a scent mainly depends on the context in which we first smelled it. we first experience many smells when we're very young even while still in the womb or later as an infant. by the way smelling is also important for flavor perceptions ninety percent of them arise not on the tongue but via our factory signals whether or not truffles taste good largely depends on whether we like the aroma. sense awaken memory and can put us in a particular mood that's why the purview ministry is so profitable. apart from that