Other risky foods are raw shellfish and raw fish in general. If fish is allowed to get too warm for too long, it can make you sick EVEN if thoroughly cooked. Keep in an insulated cooler until ready to chow down. Bring a meat thermometer if having a cookout. When in doubt about the safety of anything, throw it out.
Food is cheap.
Your health isn't. My husband says that the heat of the grill cleans off any germs. I still think it should bee scrubbed first before using. However, failing to do this won't cause a problem so long as the grill is VERY hot when you put food on it. Hot enough to make your food sizzle.