If you eat something gross and you don't even notice does it matter? For example, say you go to a restaurant and someone messes with your food and you eat it, but you don't notice anything different, it still taste good and you enjoyed the meal... does it matter? Would you want to know?
It obviously depends. A blanket question like that never applies to all situations. Exotic, strange animal body parts that I never considered edible? Sure whatever. Mosquito feces boiled with egg whites? I probably don't wanna touch that.
If the guy at whataburger put some spunk in your gravy, would you really want to know......... Sure, sounds like an epic lawsuit! (But then you will for ever be known as the guy who dipped your chicken fingers in another guys spunk. IDK.)