Tomatoes are exceptionally dangerous due to their high acidity, which seems to cause BPA to leech from the lining of the can into the tomatoes themselves.
Processed meats contain numerous chemicals and preservatives, including sodium nitrates, which make them, look appealing and fresh but are well known carcinogens.
Salmon contains cancer causing compounds such as pesticides, antibiotics, PCBs, and even flame retardants. It also contains high levels of mercury, and cancer causing dioxins.
Potato chips are fried in high temperatures to make them crispy but this also causes them to make a material called acrylamide, a known carcinogen that is also found in cigarettes. Eating just 1 once of potato chips per day caused an average 2 pound weight gain in one year.