My buddy worked in a process plant and he won't even touch the stuff. He went on to tell me all that goes into the process of making these burgers.....when we drive by a fast food hamburger place the smell about makes him puke, he says the process plant smells just like it or even worse.
Speaking of meats, they use carbon monoxide in the meat packing process to keep it looking red on the shelves longer....
here's a link
http://www.usatoday.com/money/indust...terstitialskip