I have 8 eggs that have not hatched and it is day 21. They’ve shown no signs of life, and it smells in there. I’ve hatched 7 chicks so far, one passed after hatching. I decided to check each egg to find the stinker, but none of them smell like they’re rotten. All that I’ve seen says that I’ll know right away which one it is, but none of them are. I checked two of the eggs with a flashlight and they’re just black, there’s no air sack shining through. I don’t know if it’s because they’re hatching soon or if they’re dead. They had life just a few days ago, but nothing now.