The purpose of the present invention is to provide a deodorant or a deodorant composition having excellent deodorizing performance with respect to sulfurous stench from methyl mercaptan, hydrogen sulfide, and the like. Another purpose of the present invention is to provide: a deodorant or a deodorant composition that maintains a deodorizing effect with respect to sulfurous stench and that makes it possible to minimize resin degradation when kneaded into a resin； and a deodorizing product using same. This deodorant is characterized by comprising an amorphous copper silicate represented by formula (1). Formula (1): xNa2O.yCuO.SiO2.zH2O. In formula (1), x is a positive number between 0.002 and 0.040 inclusive, y is a positive number between 0.07 and 0.48 inclusive, and z is a positive number between 0.02 and 0.30 inclusive.本發明之目的在於提供對於甲基硫醇或硫化氫等的硫黃系惡臭具有優異的消臭性能之消臭劑或消臭劑組成物，而且提供能一邊維持對於硫黃系惡臭的消臭效果，一邊抑制對樹脂捏合加工時的樹脂劣化之消臭劑或消臭劑組成物、及使用彼等之消臭性加工品。本發明之消臭劑的特徵為包含下述式[1]所示的非晶質矽酸銅，xNa2O‧yCuO‧SiO2‧zH2O [1]式[1]中，x為0.002~0.040之正數，y為0.07~0.48之正數，z為0.02~0.30之正數。
