Fascinating story on how people are more inclined to form friendships with others with similar body odor.
The methodology seems pretty sound.
I'm intrigued that this could be yet another arena in which our ancient evolutionary/animal heritage can have a powerful subliminal effect on our "civilized" human life experience.
Popular press summary: "Scent of a Friend: Similarities in Body Odor May Contribute to Social Bonding".
Academic paper: "There is chemistry in social chemistry" (Science Advances, 24 Jun 2022, Vol 8, Issue 25).
