People who have better spatial memory are also better at identifying odors. A new study builds on the recent theory that the main reason that a sense of smell evolved was to aid in navigation, since most animals rely primarily on smell to find food and avoid predators.

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People who have better spatial memory are also better at identifying odors. A new study builds on the recent theory that the main reason that a sense of smell evolved was to aid in navigation, since most animals rely primarily on smell to find food and avoid predators.