When you go into your favourite fast food restaurant spare a thought for the staff. The oils in the deep fryers give off a mist of a toxic chemical called Acrolein. It sticks to their clothes and is considered to cause cancer. By the way your deep fried food is full of this chemical. By the way again cigarette smoke also contains Acrolein, not just the smoke that’s comes off the cigarette but also the smoke that has been in your lungs.