talking about it = bad
ignoring it = bad
behind their back, and tell them you stopped = good.
Just go out n walk the dog or a jog or whatever the fuck ya like to do, and go smoke then. No point in arguing with em about it though if you already know its pointless. "alright, Ill stop smoking if you just shut up about it" itll tick em off but they will think they have won the battle. but whether ya like it or not its their house, so try n keep it outside, or at least make sure they dont know.