A deodorization module (100, 200, 300, 400, 500) comprising: a housing (110, 310) including a main body (111, 311) and a cover (115, 315), wherein one surface (117, 317) of the housing (110, 310) includes a curved surface; a suction hole formed through said one surface (117, 317) of the housing (110, 310) to allow air to be drawn into the housing (110, 310) therethrough; a fan disposed at the suction hole to draw in air; a discharge hole formed through said one surface (117, 317) of the housing (110, 310) to allow the air drawn in by the fan to be discharged from the housing (110, 310) therethrough; a photocatalyst bar disposed between the fan and the discharge hole and comprising a first through-hole through which the air passes; a light source module emitting UV light toward the photocatalyst bar for activating a photocatalytic reaction; and a fan seating member disposed at the suction hole and formed with a second through-hole allowing air to be drawn therethrough, wherein the main body (111, 311) comprises an open portion and is configured to receive the fan, the photocatalyst bar, and the light source module, wherein the cover (115, 315) is configured to cover the open portion of the main body (111, 311), the cover (115, 315) being detachably coupled to the main body (111, 311), wherein the fan is seated on the fan seating member, and wherein the air drawn in by the fan passes through the photocatalyst bar, before being discharged from the housing (110, 310) through the discharge hole, characterized in that the fan seating member is disposed in an inclined manner at the suction hole, and wherein the suction hole and the discharge hole are formed through the same surface (117, 317) of the housing (110, 310) comprising the curved surface being curved inwardly of the housing (110, 310). a housing (110, 310) including a main body (111, 311) and a cover (115, 315), wherein one surface (117, 317) of the housing (110, 310) includes a curved surface; a suction hole formed through said one surface (117, 317) of the housing (110, 310) to allow air to be drawn into the housing (110, 310) therethrough; a fan disposed at the suction hole to draw in air; a discharge hole formed through said one surface (117, 317) of the housing (110, 310) to allow the air drawn in by the fan to be discharged from the housing (110, 310) therethrough; a photocatalyst bar disposed between the fan and the discharge hole and comprising a first through-hole through which the air passes; a light source module emitting UV light toward the photocatalyst bar for activating a photocatalytic reaction; and a fan seating member disposed at the suction hole and formed with a second through-hole allowing air to be drawn therethrough, wherein the main body (111, 311) comprises an open portion and is configured to receive the fan, the photocatalyst bar, and the light source module, wherein the cover (115, 315) is configured to cover the open portion of the main body (111, 311), the cover (115, 315) being detachably coupled to the main body (111, 311), wherein the fan is seated on the fan seating member, and wherein the air drawn in by the fan passes through the photocatalyst bar, before being discharged from the housing (110, 310) through the discharge hole, characterized in that the fan seating member is disposed in an inclined manner at the suction hole, and wherein the suction hole and the discharge hole are formed through the same surface (117, 317) of the housing (110, 310) comprising the curved surface being curved inwardly of the housing (110, 310).