I recommend that you go ahead and rip off a good one the next time you guys are getting cozy by the fireplace watching a DVD. See how he reacts. Sure, it is bad manners in public, but hell, if you can't totally relax at home with your SO, what's the point? Besides, my mother taught me that it is okay if you can't help it, but you should say, "excuse me". My hunch is that you will blush and giggle but find it liberating.
Mind you, I am not saying have a contest or do them on purpose like biteme, but if you have a raging gas bubble working its way down your intestinal tract, let it go.