Cultural smells are interesting. In Japan, they find the strong scents of perfume, cologne, and even shampoo that westerners wear to be intolerable and people at restaurants will discreetly ask to change tables to move away from those wearing it. They are more sensitive to fragrances there while Americans have fragrance in almost everything.
Of course, the most respectful thing to do when traveling is to just take a shower and wear a neutral deodorant so that you're not giving off any unique smells.
This situation sure sounds like it blew up into a racist power trip though.
This was the research done by Freakonomics!
Podcast revisiting this research with sources at the bottom:
https://freakonomics.com/podcast/abortion-and-crime-revisited/
This is the revisited research paper showing the connection (PDF):
https://bfi.uchicago.edu/wp-content/uploads/BFI_WP_201975.pdf