Cans of food can contain bacteria that can lead to food poisoning. Cans should be kept away from heat and humidity, says the CDC.

Canned food can also contain harmful bacteria called salmonella, which can cause food poisoning if left in the can for too long. The CDC recommends that canned food be stored in a cool, dry place, not in a hot, humid place like a refrigerator or a microwave, and that cans be kept in a well-ventilated area.