What Causes 'Old People Smell'?

If you've ever associated a smell with old age, you weren't imagining it—it all has to do with the chemistry of our skin.

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Sources:
http://www.jidonline.org/article/S002... - back-bb0055
http://www.jidonline.org/article/S002...
https://www.sciencedirect.com/science...
https://www.agingcare.com/articles/ol...
http://www.dana.org/Cerebrum/2001/Ah,...
http://journals.plos.org/plosone/arti...

Image Sources:
https://pixabay.com/en/baby-child-kid...
http://www.thinkstockphotos.com/image...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://pixabay.com/en/skin-brown-ski...
https://pixabay.com/en/roses-rosebush...