PROBLEM TO BE SOLVED: To provide an odor substance adsorbent capable of improving deodorizing performance both at room temperature and under heating. An odorant adsorbent containing a hydrazine compound and a solvent, the solvent containing at least an organic solvent having a boiling point of 200° C. or higher. [Selection diagram] None【課題】室温下及び加熱下のそれぞれについて、消臭性能を向上させることができる臭気物質吸着剤を提供する。【解決手段】ヒドラジン化合物と、溶媒とを含有し、前記溶媒が、少なくとも沸点が200℃以上の有機溶媒とを含有する、臭気物質吸着剤。【選択図】なし