Can you put foam plates in a microwave oven?

No. Putting foam plates in a microwave oven is potentially hazardous and can damage your microwave. When heated, foam plates can release several volatile organic compounds (VOCs) into the air, which are known to cause several health risks. Additionally, foam plates can melt, warp, and char when exposed to high microwave oven temperatures, potentially damaging the microwave interior and creating hazardous fumes.

When exposed to high temperatures, VOCs can irritate your eyes, throat, and nose. They can also trigger headaches and nausea, and in some cases, they can cause respiratory problems such as asthma.

For these reasons, avoid putting foam plates in the microwave oven. If you want to reheat food in the microwave oven, use a microwave-safe container instead.