A mechanic neighbor has symptoms of colon cancer. (Stool bleeding.) When ever he eats hamburgers, hot-dogs or anything that requires his greasy hands, he does not wash his hands after making greasy car or truck repairs. People know he would catch cancer for doing this and they warn him. He rubs his hands on rags before touching food. After a meal you can see more grease being rub off. One other mechanic dies after his intestines completely fuse together. Is it possible to catch cancer from our greasy hands?