<![CDATA[TIL that "old person smell" is caused by a chemical compound called Nonenal that naturally starts forming on human skin around age 40.]]>TIL that "old person smell" is caused by a chemical compound called Nonenal that naturally starts forming on human skin around age 40. Because the compound is not water-soluble, it cannot be washed away with normal soap.

https://en.wikipedia.org/wiki/Old_person_smell

https://www.reddit.com/r/todayilearned/comments/1semg90/til_that_old_person_smell_is_caused_by_a_chemical/

]]>https://forum.fedi.dk/topic/d00b3f85-8a5f-4b81-bab7-647ba715559b/til-that-old-person-smell-is-caused-by-a-chemical-compound-called-nonenal-that-naturally-starts-forming-on-human-skin-around-age-40.RSS for NodeMon, 13 Apr 2026 12:55:31 GMTTue, 07 Apr 2026 05:06:02 GMT60