White and Treisman posited that olfactory memory occurs because individuals assign verbal meanings to olfactory stimuli. They also claim that just as olfactory sense is a crucial sense for other animals, "there is no a priori reason why humans alone should lack an olfactory memory"


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Note added at 5 Min. (2009-12-18 09:52:08 GMT)
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http://www.macalester.edu/psychology/whathap/ubnrp/smell/mem...

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Note added at 8 Min. (2009-12-18 09:54:57 GMT)
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or 'olfaction'

Olfaction
One of the chemical senses, specifically the sense of smell. Olfaction registers chemical information in organisms ranging from insects to humans, including marine organisms. For terrestrial animals, its stimuli comprise airborne molecules. The typical stimulus is an organic chemical with molecular weight below 300 daltons. A few inorganic chemicals can also stimulate olfaction, notably hydrogen sulfide, ozone, ammonia, and the halogens.

http://encyclopedia2.thefreedictionary.com/Olfactory sense