It’s lunchtime, your stomach is growling and you’ve decided to make a sandwich. But as soon as you head to the pantry and open the bread bag, you see it: a whitish, greenish spot. Ugh — it’s mold.

If you accidentally eat moldy bread, keep an eye out for symptoms like nausea or shortness of breath. Consult a healthcare professional if they develop. Most mold exposure from food is not harmful, ...