How can baking powder be used to safely extinguish a grease fire?

Baking powder can be used to extinguish a grease fire by smothering the flames. When baking powder is sprinkled on the fire, it releases carbon dioxide gas, which helps to suffocate the flames by displacing oxygen. This method is safe because baking powder is non-toxic and does not produce harmful fumes when used to put out a grease fire.