You can mask the smell of your farts by spraying air freshener in the area or by using the scent of hand cream to ward off the smell. Rub scented hand cream on your hands after you have farted so the scent overpowers any stinky smells that may be lingering in the air. Method 2 ...
I have to say, though, I've found if I relieve myself of the bulk of my gifts in advance, I'm able to "feed" my slave very small, manageable amounts. The same is true of my nectar. I've also found a website which gives VERY good information about foods best for ME to eat ...