I discovered beef jerky makes pee smell, so I'll have to add that to the list. It sure tasted good, but the combined smell of pee and jerky wafting up from my diaper has me thinking I don't want any more for a while.... A long while. :dunno:
I wonder if pheromones have anything to do with those who find the smell of a wet diaper pleasant or relaxing. Not everyone reacts to pheromones the same way. they are a bit of an evolutionary hold over from a distant part of our evolution, and many people don't have any reaction to them at all. But for those that do, I wounder if it's a bit of a territory thing. your own scent masking out all others, claiming the area around you as totally your own. a safe place.