[无风不起浪 / 無風不起浪, wú fēng bù qǐ làngㄨˊ ㄈㄥ ㄅㄨˋ ㄑㄧˇ ㄌㄤˋ] lit. without wind there cannot be waves (成语 saw); there must be a reason; no smoke without fire#84072
[きんえん, kin'en] (n, vs, adj-no) (1) (See 喫煙) abstaining from smoking; quitting smoking; (exp) (2) (on a sign) No Smoking!; Smoking Prohibited!; (P)#15623