Help, broke a fluorescent light near food at a school cafeteria?

I own a janitorial service company and we were cleaning in the school cafeteria and I was changing out the fluorescent light bulbs (the ones that needed changing). One of the bulbs dropped and busted. We had moved some large tubs of potato salad out of the freezers to move some stuff around and some of the glass may have gotten in one of the containers that didn't have a lid on it at the time. I picked glass off the table, but didn't see any glass in the food container. Well, now I am having second thoughts and wondering if I should call the school. Thing is, I really need this account and if I call I could lose this account, which I don't to happen. Since fluorescent bulbs are not true glass, would small amounts just pass through someone's digestive tract?