You can perform a floating test to check if your eggs are still safe to eat, or you can take a look at the expiry date printed on the carton. If the current date is before the expiry date, then your eggs are still safe to consume. You can also check the packaging date. If the eggs are less than 31 days from the packed date, then your eggs are good. Rotten eggs also produce an unusual odor which is a sure sign that you shouldn't eat them.