On the scent


By Alison Motluk PEOPLE feel differently about a smell depending on which nostril they sniff it through, say scientists in the US. Larry Cahill of the University of California at Irvine and his colleagues asked 32 volunteers to sniff eight common odours, including lemon and peppermint. The volunteers had to smell the odours through one nostril and rate them for pleasantness on a scale of −5 to +5, and also try to identify them. They came back later to repeat the test with the other nostril. When a smell was inhaled through the right nostril,
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