Eggs are often perfectly safe to eat past their sell-by date. If an egg floats in a bowl of water or has a sulfurous smell once cracked, it's no longer safe to eat. It's best to store eggs in their ...
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How to tell if an egg has gone bad

Rotten eggs also release gases that can make them buoyant. If an egg smells bad or you are uncertain if it's spoiled, the safest bet is to throw it out. Another method to tell if your eggs have gone ...