PROBLEM TO BE SOLVED: To provide a new deodorant that exhibits high deodorant ability on odorous components.SOLUTION: A deodorant contains a polymer in which an unsaturated monomer-derived structural unit having a lactam structure, represented by formula (1), is 50-100 mass% relative to the total structural unit 100 mass%, the polymer optionally further having a crosslinked structure (R1-R4 independently represent H or a substituted/unsubstituted C1-10 alkyl group x is an integer of 0-4 y is an integer of 1-3).SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】臭気成分に対して高い消臭能力を発揮する、新たな消臭剤の提供。【解決手段】式(1)で示される、ラクタム構造を有する不飽和単量体由来の構造単位が、全構造単位100質量%に対して50~100質量%の割合であり、架橋構造を更に有する重合体を含む消臭剤。(R1~R4は夫々独立にH又は置換/非置換のC1~10のアルキル基;xは0~4の整数;yは1~3の整数)【選択図】なし