Humans Respond to Scent of Fear

From Live Science:

Moviegoers might want to scoff a bit less when characters talk about the scent of fear. Women exposed to fear chemicals in male sweat tended to see ambiguous faces as being more fearful, according to a new study.

Such research shows for the first time how even the smell of fear can affect how people interpret what they see right in front of them. That fits with previous studies showing that visual and facial cues can affect human emotion and interpretation – but mainly when the situation seems uncertain.

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