I have a rotten egg, well at least one. I can tell by the smell in my bator. Problem is, how do I tell which one? I have some that are ten days old and some that are almost three days old. None look weepy. I will be tossing any of the clear ten day olds, but what if it's the three day olds? These are Guinea eggs and the ten day olds had pretty obvious development at 3 days. But I did have a few I had assumed clear turn into a developing baby at day 7.