LOL you sound like a teenager trying to hide their drinking from their parents. Doesn't that sound a bit immature? I agree, you should respect your wife wishes.
But it's difficult to mask the smell of alcohol because your body is actually exuding it... hell, even your skin and eyeballs are exuding alcohol when you drink (there's actually tests for the eyes now). But to beat an breathalyzers test, i've heard if you eat dirt you can... that screws up the instruments so it gives a false negative (of course i never tried it so i can't confirm). So no advice... you can try that peanut butter, that sounds like something simple, but i'm skeptical of that.