If you're not sure if your corn husks are bad, there are a few things you can look for. First, check to see if the husks are dry and brittle. If they are, they're probably past their prime and won't be as fresh as you'd like. Another way to tell if husks are bad is by looking at the color. If they're yellow or brown, they're probably not as fresh as they could be. Finally, give them a smell - if they smell off or musty, it's best to discard them.