I had my first "exploding" egg today, and wow... now I understand why people hate them so much! I did notice the incubator started to smell bad a few days ago, but thought one of my cats (who like to sleep on it) just got something on it. THANK GOODNESS the egg simply cracked, and didn't actually spill all in the incubator. It did leak onto the turner just a bit, and I was able to clean that up with a wet wash cloth. My question is, aside from smell, is there any way to tell an egg is going bad? When you candle it, is anything significantly different? This was most likely that particular hen's very first egg ever laid (we found several of them at once) which could explain why it was bad. It was even an odd shape - both ends were the same size, instead of one being larger than the other. I'm just wondering if there is a way to spot it BEFORE everything starts to reek - especially the air in the ENTIRE house, from simply moving it across the room to the trash!