“…[a woman's sexual interest] signals come through scent molecules called pheromones and facial expressions. The proximity means a woman can vet a potential mate for fitness before allowing him to come close to her. In contrast, men can pick up the attractiveness of a woman’s walk from a long distance — and a ‘sexy’ walk, visible from afar, could therefore act as an unwitting signal to less appealing males. So, having a less sexy walk at the time of ovulation gives a woman an evolutionary advantage: she can hide her fertile period from an undesirable man who might want to take advantage of her at the time.” Read more.
“I’m sorry, mister, but those scent pheromones I was exuding weren’t meant for you.”