Yeah that alarm will probably beep no matter what you do, if you go to type in the code to shut it off it would beep while you are doing that, then you would have the task of re-engaging it or else your parents would be like wtf? Your best bet is to put some shampoo on the floor of the shower turn the shower on real hot, put a towel under the door, light a candle (remember to put it out), and use a spoof to blow the smoke through. Then hope that you don't get caught. I wish you the best of luck.