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What Causes ‘Old People Smell’?

Old people have that distinctive smell because of the chemical called 2-nonenal. Nonenal begins appearing at the age 40, and the amount increases as you age.

THIS IS COOL. I WANT TO LEARN SOMETHING ELSE, TOO!

Video via – SciShow
Further Readings And References @ Biomedicine & Pharmacotherapy, The Journal of Investigative Dermatology, 2-Nonenal (Wikipedia)

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