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The Monell Chemical Senses Center says that people can tell another person’s age simply by their smell.
All human bodies have a body odor that is composed of different chemicals that change as a person ages. Research also showed that the “old-person smell” was less unpleasant than the smell of younger people. This theory also applies to animals when choosing a suitable mate by their body odor.
Although research already showed that animals were able to distinguish ages by smell, the Chemical Center proved that humans can do the same. To read more, click here.