The weird thing is that Pappabear had some Remington bulk 9mm in the green/yellow box that got wet, and there were at least 10 of those rounds that did not fire. Yet they looked fine.
I once had a sleeve of Winchester white box 115 gr in the bottom of a spare locker. Lo and behold a one gallon container of slip 2000 degreaser the water based one leaked over the case over a period of time. When I finally discovered this the gallon was completely empty and case of ammo soaked for God knows how long. Emptied the ammo in an ammo can I shot all of it over the course of a week or so. Moral of the story don’t store ammo with cleaning supplies lol.