Noisomeness
lrb.co.uk
lrb.co.uk
https://www.google.com/search?q=cow+urine+medicine&oq=cow+ur...
On a more accessible level, low amounts of ammonia is useful for topical treatments of itch, like from bug bites.
People often act as if any body odor is bad, and I disagree -- many people have a pleasant natural scent. I wonder to what extent that perception has changed over time, and to what extent people's odors have changed over time. (Skin microbiome?)
[0] https://www.psychologytoday.com/au/articles/200801/scents-an...
As for the daily shower, these days I guess a class distinction is between whether one showers before or after work. (idem for hand washing and urinals?)
Is this the story about him honing his sense of smell?
"People’s hands smell very different—that’s why dogs can identify people; you have to try it! All hands have a sort of moist smell, and a person who smokes has a very different smell on his hands from a person who doesn’t; ladies often have different kinds of perfumes, and so on. If somebody happened to have some coins in his pocket and happened to be handling them, you can smell that."