PROBLEM TO BE SOLVED: To reduce the possibility that an odor generated when decomposing an odorous substance adsorbed by an adsorption means diffuses to the outside of a housing. SOLUTION: A blowing means for generating an air flow, an adsorption means for adsorbing an odorous substance in the air flow generated by the blowing means, a decomposition means for decomposing the odorous substance adsorbed on the adsorption means, and a blowing means. While the housing accommodating the adsorption means and the decomposition means and the decomposition means decompose the odorous substance, the air flow generated by the blower means is limited to the inside of the housing or the outside of the housing. A deodorizing device equipped with a circulating means for circulating. [Selection diagram] Fig. 2【課題】吸着手段に吸着された臭気物質を分解する際に発生した臭気が筐体の外部に拡散する可能性を低下させる。【解決手段】空気流を発生させる送風手段と、送風手段が発生させた空気流中の臭気物質を吸着する吸着手段と、吸着手段に吸着された臭気物質を分解する分解手段と、送風手段と吸着手段と分解手段とを収容する筐体と、分解手段が臭気物質を分解している間は、送風手段が発生させた空気流を筐体の内部又は筐体の外部の限られた範囲で循環させる循環手段とを備えた脱臭装置。【選択図】図2