Few cracked eggs

[bubra007]

My eggs have been in the incubator since last Saturday...a few days ago I noticed a terrible smell coming from the bator. I found one of the eggs oozing out liquid so I removed that egg. Today I found another stinky egg with a crack all the way around. When I put the eggs in the incubator, I looked them over quickly and saw no cracks...so what gives? What would cause an egg to crack while its undisturbed in the bator? Where these ones never fertile? Any ideas?

 

[gabrielle1976]

maybe the pressure from the rotten ooze was able to crack it , or sometimes eggs have such light cracks you can only see them when you candle maybe they had those kind of cracks and the build up of ooze made them bigger ?
Im shure someone will know
Be carefull they can blow up