PROBLEM TO BE SOLVED: To provide a smoking agent and a smoking device that avoid uneven control effect when used in a space with a high ceiling, and also cause little contamination.SOLUTION: A smoking agent comprises (A) component: azodicarbonamide, (B) component: a drug, and (C) component: at least one of an organic acid having a carboxy group and a salt thereof, and a mass ratio represented by ((A) component/(C) component) is 1-25.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】天井が高い空間での使用において防除効果にムラが生じにくく、しかも低汚染性である燻煙剤および燻煙装置を提供する。【解決手段】(A)成分:アゾジカルボンアミドと、(B)成分:薬剤と、(C)成分:カルボキシ基を有する有機酸およびその塩の少なくとも一方と、を含有し、(A)成分/(C)成分で表される質量比が1~25である燻煙剤を用いる。【選択図】図1