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In fire safety, to "smother" means to extinguish a fire by depriving it of oxygen, one of the essential elements of the fire triangle (fuel, heat, oxygen) or fire tetrahedron (fuel, heat, oxygen, chemical reaction).

By covering the fire with an item (such as a fire blanket or the lid of a pot) or a substance (such as firefighting foam or a dry chemical agent) that blocks the flow of air, the oxygen supply is cut off, preventing combustion and causing the fire to go out.

Smothering is an effective method for controlling small fires, particularly those involving flammable liquids and cooking oils.


    In preparing this definition, we have drawn from various sources including Legislation, Codes, Standards and industry information, research and knowledge.  Like the english language, these definitions may subtly change from time to time. As such these definitions are provided solely on the basis that users will be responsible for making their own assessment of the definition and and are advised to verify all relevant representations, statements and information.