Bathroom etiquette?

Ok. So i'm not a big fan of the social convention of saying "Bless You", "God Bless You", or "Gesundheit" when someone sneezes. Because i dont want to appear like a jerk, i still say it most of the time when someone sneezes. I guess because they expect it, and i dont want to let them down. But I am in NO WAY offended if someone doesnt say it to me. Maybe thats because i sneeze like 10 times in a row, but still. I dont care.

Now, when you're in the bathroom, and someone's in a stall, and they sneeze, whats the proper course of action? Isnt there a "no talking between someone in a stall and someone outside the stall" rule? unless of course its your friend in there and no one else is in the bathroom. But i was washing my hands, someone in a stall sneezed. i didnt know who it was, so i didnt say anything. I was slightly puzzled though if i should have or not. was that person expecting it? were they hoping i wouldnt say anything? Dont people want to be left alone while doing their personal business? I do. i think if i was in their shoes, and someone said "Bless you", i would sort of feel invaded in a way.

what do you think? if you were dropping the Cosby kids off at the pool, and you sneezed, do you want to hear a "bless you" from the person washing their hands? And if you were washing hands, would you offer a "gesundheit" to the person taking the Cleveland browns to the super bowl?