Obviously non of you ever worked in a restaurant or better yet a fast food joint, otherwise all of you would've realize that unless people literally went to the toilet on your food, you can and probably will eat it.
Trust me, I used to work for a major burgers seller (guess for yourself, I ain't taking any law suits today..), as well as for a pretty classy restaurant which was a bit better, though believe me, non of you would've even sit in the same table with some of the food that's being served in those places had you know what its been through. Yet we all somehow eat it, and come back for more. In this case the lack of knowledge is a huge benefit, took me a couple of years to manage to "forget" so now I can eat outside and not think about it.