NOVELTY - Deodorizing system of an organic refuse treatment machine comprising a fan which blows off air from an air supply path to eject the cracked gas formed in a treatment tank through a gas spillway after deodorizing by a deodorizer, is switched by a lid detector to increase the blast weight to cause a strong air flow towards the gas spillway when it detects the opening closing of a lid which covers the treatment tank.    USE - For deodorizing the cracked gas generated during the decomposition treatment of an organic refuse within the treatment tank of an organic refuse decomposition treatment machine set in an indoor installation space.    ADVANTAGE - The offensive odor component contained in the cracked gas generated in a treatment tank at the time of stirring an organic refuse can be removed by the catalyst of a deodorizer and ejected from an exhaust port of gas spillway and the spreading of bad smell when opening and closing the lid of the treatment tank at the time of inserting organic refuse into the treatment tank since the blast weight of a fan which inhales air from an air supply path and blows off towards the gas spillway is increased when detecting the opening and closing of the lid. The operation can be performed without causing an unpleasant feeling to an user.    DETAILED DESCRIPTION - Deodorizing system of an organic refuse treatment machine comprising a fan which blows off air from an air supply path to eject the cracked gas formed in a treatment tank through a gas spillway after deodorizing by a deodorizer, is switched by a lid detector to increase the blast weight to cause a strong air flow towards the gas spillway when it detects the opening closing of a lid which covers the treatment tank. The treatment tank is formed inside a frame which is opened and closed by the lid. A stirrer is provided to stir the refuse put into the treatment tank while drawing air from outside the frame and circulating it through the interior of the treatment tank towards the gas spillway. The air is ejected outside the frame along with the cracked gas through the gas spillway.    DESCRIPTION OF DRAWING(S) - The figure shows the block diagram of the deodorizing system. (Drawing includes non-English language text).    Lid (2)    Treatment tank (3)    Deodorizer (5)    Fan (6)    Lid detector (9)