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Humans can Smell Fear, Disgust

by Sheela Philomena on November 7, 2012 at 12:13 PM
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 Humans can Smell Fear, Disgust

Humans can sniff out fear and disgust and the emotions are contagious, states study. The findings suggest that humans communicate via smell just like other animals, CBS News reported.

"These findings are contrary to the commonly accepted assumption that human communication runs exclusively via language or visual channels," Gun Semin and colleagues from Utrecht University in the Netherlands wrote.

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Most animals communicate using smell, but because humans lack the same odor-sensing organs, scientists thought we had long ago lost our ability to smell fear or other emotions.

To find out, the team collected sweat from under the armpits of 10 men while they watched either frightening scenes from the horror movie 'The Shining' or repulsive clips of MTV's 'Jackass.'
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Next, the researchers asked 36 women to take a visual test while they unknowingly inhaled the scent of men's sweat.

When women sniffed "fear sweat," they opened their eyes wide in a scared expression, while those smelling sweat from disgusted men scrunched their faces into a repulsed grimace. (The team chose men as the sweat donors and women as the receivers because past research suggests women are more sensitive to men's scent than vice versa.)

The findings suggest that humans can communicate at least some emotions by smell, which could prove useful in crowded places, the authors suggest.

"Our research suggests that emotional chemo-signals can be potential contributors to emotional contagion in situations involving dense crowds," the authors wrote.

The findings are published in the journal Psychological Science.

Source: ANI
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