The present invention relates to a deodorizing device capable of removing, with high energy efficiency, odors contained in an exhaust gas containing odor components generated in processes such as food waste treatment, stockbreeding, agricultural and livestock processing, and wastewater treatment. The deodorizing device according to the invention comprises: a heater for thermally decomposing odor components by heating a waste gas containing odor components； a heat exchanger which is disposed on one side of the heater； and a waste gas flow means for allowing the waste gas to flow through the heater and the heat exchanger, wherein the heat exchanger includes: a container having a space therein； a waste gas inlet which is formed on one side of the container； a waste gas outlet which is formed on the other side of the container； and one or more tubular heat exchange tubes which are disposed to extend inside the container, wherein the outlet is connected to an inlet of the heater, one end of the heat exchange tube is connected to an outlet of the heater, the waste gas flow means is connected to the other end of the heat exchange tube or the waste gas inlet, wherein the waste gas is introduced into the waste gas inlet of the heat exchanger by the waste gas flow means and is discharged to the waste gas outlet, and the waste gas discharged to the waste gas outlet is heated by the heater to undergo thermal decomposition and then is discharged to the outside through the heat exchange tube.La présente invention concerne un dispositif désodorisant capable d'éliminer, avec un rendement énergétique élevé, les odeurs contenues dans un gaz d'échappement contenant des composants odorants générés dans des processus tels que le traitement des déchets alimentaires, l'élevage, l'agriculture et le traitement du bétail, et le traitement des eaux usées. Le dispositif désodorisant selon l'invention comprend : un dispositif de chauffage pour décomposer thermiquement des composants odorants pa
