Mac and cheese
If you are cooking mac and cheese at home, then you are safe, click through to the next point! But if you are of those people who can't be bothered by spending time in the kitchen and would rather buy an already made mac and cheese in stores - stop! The bright orange 'cheesy' colour of this food is achieved by using a dangerous toxic ingredient - coal tar, which is also used to make industrial floors shiny. Sounds dangerous? It is!