On Odors

I’m almost afraid to ask what it is that foreign, mostly eastern European/Asian countries (e.g. Serbia, Russia, etc.) put in their powders, but one of the ingredients smells horrible.
I really like Prvi Partizan ammo, as it’s reliable, consistent, well-made, and easily reloadable. The fact that it’s loaded to NATO spec and is commonly available (unlike, say, Federal XM193/XM855) is a big plus. I’ve never had any practical problems with it at all…but it, like the Russian Wolf-brand ammo, smells awful when fired.
You’d think they’d figure out how to make non-stinky ammo…