Here you go:
At the Bronx Zoo there is a monorail ride that you have to go on if you want to see Elephants, there is no other way to see elephants. We were waiting in line for this ride and my kid had a poopy diaper. So I changed him and tossed the poopy diaper in the garbage can that is literally in the line, it's not even off to the side or anything. It was July and I don't know how often they clean out that garbage. So I'm sure it smelled nasty. But there's nothing else I could have done.