Yes it’s true! Flour can be a fire hazard, especially flour dust in the air. In fact, many powdered foods, such as non-dairy creamer, spices, and dried milk, will ignite readily. This is because they can burn easily from all sides, so they flare up quickly when exposed to a naked flame. So beware when you’re using dried, powdery foods like flour. These are 15 other common kitchen items that are secretly toxic.