The three common styles of pink eyes includes viral conjunctivitis, allergic conjunctivitis and bacterial conjunctivitis, but only the last one of them is contagious. One apparent symptom of bacterial conjunctivitis is the abnormal discharges in the corner of eyes, I mean, you may have yellow, sticky or greenish-yellow eye discharges containing the bacteria. They can infect through hands and items that have touched the contagious eyes, or even through air. So if your hand touch the eyes or the items that have touched contagious eye, and you do not wash them thoroughly afterwards, the food will be contagious, not by itself, but by the bacteria brought by your hand.