Check for a sulfur, rotten, or unusually strong odor
Look for a slimy, sticky, or powdery surface
Discard if the egg white or yolk has an unusual color, such as green, pink, black, or gray
Discard if the egg has mold
Discard if the shell is cracked and the egg was left out too long
Discard if the egg has been unrefrigerated for more than 2 hours
Discard if the egg feels unusually soft, mushy, or watery
Discard if the egg tastes off or sour
Discard if you are unsure how long it has been stored
Discard if it was stored in the refrigerator for more than 1 week after cooking