For a microwave fire, keep the door closed and turn the microwave off. Remember, if the fire does not go out, leave your home and call the fire department immediately. Using portable fire extinguisher Portable fire extinguishers can be effective in fighting small, contained fires. Use the appropriate extinguisher and ensure that you are trained in its use. Cool a burn Cool the burned area cool running water for 10-15 minutes.
Cool water reduces skin damage and minimizes pain.