* * The food sprayed by dry powder fire extinguishers is usually inedible. Dry powder fire extinguishers contain sodium bicarbonate, talcum powder, diatomite, starch and other ingredients, which may cause irritation to human respiratory tract and skin, and may also lead to poisoning or allergies. In addition, the ingredients in the dry powder fire extinguisher may pollute the food, leading to food deterioration or harm to the human body. Therefore, once the food is sprayed by a fire extinguisher, it is recommended not to continue eating it to avoid adverse effects on the body.