Extinguishing a fire in a dream means putting off or quelling a riot, deterring a war or abolishing innovation. If one sees himself in a dream smothering an already dead fire, it means that he is trying to rekindle an old war or to provoke evil between people.
Dream dictionary: Extinguishing a fire dream meanings
For sick persons, death; for well people, it is a good sign. 61.
Being forced to give up a project, also, removing an obstacle in your path. , 123.
(Water sprinkler) In a dream, a sprinkler means rejuvenation, renewal of life, revival of old practices, or extinguishing a fire.
(See Extinguishing a fire)