When our primitive ancestors rose on their legs and ceased to be quadrupeds, the telesenses (sight and hearing), very powerful for perceiving events in the distance, prevailed over the proximal senses (taste and smell), more closely related to survival, with eating and avoiding dangers. But, far from perishing, these ancestral chemical senses continue to form an essential part of our nature. Although we may not realize it, humans today still have a powerful sense of smell.
