Your smell circuits are hotwired to those that process emotion, memory and motivation. Is that why you’re feeling so edgy, chatty, touched or sated right now?
By Jena Pincott
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It May Geek You Out
In an experiment led by Denise Chen at Rice University, female volunteers scored higher on a word-association test after smelling sweat from the armpits of horror-movie watchers (compared to neutral or no sweat). Through learned association, inhaling "fear" or "stress" sweat may make us more alert and vigilant—which translates into a cognitive boost.