Ammonia from fermented urine was commonly used for washing thousands of years ago. I can’t imagine he smelled much worse than anyone else processing the stuff.
But don't underestimate that added step of boiling it, until he was left with only a powder extract. Heat will amplify the smell and make the gases expand.
Toured a leather co-op in Morocco (Fes) where they process everything naturally. They collected pigeon droppings for similar reasons. Locals call it caca channel.
Ammonia from fermented urine was commonly used for washing thousands of years ago. I can’t imagine he smelled much worse than anyone else processing the stuff.
But don't underestimate that added step of boiling it, until he was left with only a powder extract. Heat will amplify the smell and make the gases expand.
Toured a leather co-op in Morocco (Fes) where they process everything naturally. They collected pigeon droppings for similar reasons. Locals call it caca channel.