<human>:  What are the dangers of using a microwave oven?
<bot>: The main danger of using a microwave oven is the risk of radiation exposure. Other risks include the potential for burns and fires, and the possibility of food contamination from improper use or from the materials used in the oven. Additionally, certain food items, such as metal containers and metal foil, should not be placed in a microwave oven to avoid sparks and electric shocks.