How We Can Smell Fear... And Why It's Catching

Everyone knows that an infectious giggle can spread through a room in an instant.
But scientists say that fear might be catching too – and that’s no laughing matter.
Research has shown that the sweat we produce when we are scared gives off signals that are subconsciously picked up by others.
Their experiments might explain why even those who normally fly with confidence, sometimes experience the occasional pang of doubt for no reason

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