Smoke is a collection of airborne solid and liquid particulates and gasesSmoke Production and Properties - SFPE Handbook of Fire Protection Engineering emitted when a material undergoes combustion or pyrolysis, together with the quantity of air that is entrained or otherwise mixed into the mass. It is commonly an unwanted by-product of fires (including stoves, candles, oil lamps, and fireplaces), but may also be used for pest control (cf.
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