Umm, whatever you do, don't fire up a 5G batch and get everything set up only to find that your wife decides that she doesn't like the smell and tells you that you are no longer allowed to brew.
I started with a 2G partial boil, and my girlfriend said she felt nauseated all night while I was boiling it. She is also somewhat sensitive to smells. I personally like the smell of the grain mashing or the wort boiling, but honestly I think it is a slightly acquired thing.
After the 2nd partial boil inside, I upgraded to a propane burner and never brewed inside again. Brewing outside has many advantages: you can be louder, you can make a mess and clean it up later if needed, you wont cause any smoke detectors to go off if you have a boilover, you wont damage your stove if something goes wrong, you wont cause any offense with the smells, and you will be able to do full boils with ease.
I've had excellent brewing experiences working outside since then. Even on hellishly cold nights during blizzards, we've made amazing beers. My girlfriend is very understanding, but I am fairly certain that her patience would have been pushed to the limit if I brewed inside as often as I brew outside.