Humans Sense 10 Basic Types of Smell, Bates College and University of Pittsburgh Study

The thousands of aromas humans can smell can be sorted into 10 basic categories, US scientists say. Prof Jason Castro, of Bates College, and Prof Chakra Chennubhotla, of the University of Pittsburgh, used a computerised technique to whittle down smells to their most basic essence. They told the PLoS One journal they had then tested 144 of these and found they could be grouped into 10 categories.

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