I think with any foods and obviously there are ones with higher risks, that if it doesn't look, smell or taste right, don't eat it. I have eaten chicken occassionally from a sandwich bar, but they are really clean, hygenic with their food preparation and practices when making sandwiches etc.... I also eat sushi (but not raw fish). I have forgone the macca's sundaes b/c a gf used to work at macca's and told me about the sundae machine (yuk!).