According to Louis Leakey predators avoided feasting on humans because our body odor was repugnant.

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Anthropologist Louis Leakey suggested that body odor was a key evolutionary defense mechanism—predators may have attacked early humans only as a last resort because they smelled too bad to be good food

The recent identification of numerous pheromones, or scent signals, in insects and other animals has given odor research new legitimacy.

If animals can send out such unconscious messages, humans probably have the same skills.

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