So this is kinda gross but I can't find an answer to this anywhere else. My sister brought me peafowl eggs to incubate and they smell fine. In with the peafowl eggs we think she accidentally grabbed one of the goose eggs and a duck egg. They both smell like dirty butt. Not like sulfur and not even really like poo. They smell like dirty unwashed butt. They are dirtier than the peafowl eggs are they just really dirty and safe to incubate or are they rotten?