Odor removal device

An odor removal device includes:

• a case;
• an activation device installed in the case and coming into contact with an object to activate surrounding materials according to a dielectric barrier discharge principle, wherein the activation device includes:
• a dielectric having an outer surface exposed to an outside and provided as a curved surface, and an inner surface facing the outer surface;
• and
• an electrode positioned inside the dielectric in which power is applied to the electrode, and comprising a hole formed inwardly at a center region thereof,
• wherein the outer surface of the electrode comprises:
• a curved surface which is provided convexly and facing the inner surface of the dielectric;
• and
• a sloped surface whose height constantly increases from an edge region to the center region of the electrode, and the hole penetrates the center region of the curved surface of the electrode and the center region of the sloped surface, the sloped surface being a flat surface, and
• wherein the curved surface of the electrode has a non-contact region where the hole is formed and does not contact the inner surface of the dielectric, and a contact region that contacts the inner surface of the dielectric and is located around the hole.