andare in fumo means to loose something, such as waste your time, or something of material. example: 1. due to my indecision during my exam i wasted 6 months of study a causa della mia indecisione all'esame sono andati in fumo (ho perso, ho buttato via) 6 mesi di studio 2. due to current crisis we have lost all our properties a causa della crisi sono andate in fumo (abbiamo perso) tutte le nostre proprietà

''andare in fumo'' means a situation where you loss, that a occasion lost, you don't take advantage from anything, so you can't gain a opportunity, you are a loser if you must say ''andare in fumo'', i am afraid for you, good luck for future event.

是个说法， 意思就是： 化为泡影, 化为乌有 拜拜 :)