1 You can also transport corn on the cob for the recipes....  2 If your corn on the hub is mushy then....  3 5 minutes approximately for corn take to cook depending on how....  4 Corn on the cob goes bad when its color and its smells like creepy.... Corn on the cob goes bad when its color and its smells like creepy. The corn on the cob goes bad when you put it outside for 2 days. The corn on the cob goes bad when its taste like too soft in your mouth.I hope my answer will help you a lot.