Exhausted
gases from the burning (
combustion) of substances (
solid state,
liquids, or gases), either by accident
? or for the purpose of heating
?, [lamp light]
?, [power generation]
?, [pest control]
?, communication (
smoke signals) or inhalation
?. Controlled combustion normally takes place in closed containers (such as
engines, stove
?s and lamp
?s) and the exhaust smoke is released through a chimney
? or
exhaust pipe.
See also [fire fighter]?, smog, tobacco.
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