More specifically while cooking it indoors. My girlfriend hates seafood and hates the smell, is there anything I can do to get this smell to go away faster or reduce its potent aroma when cooking with it ?
i have found that a lampe berger works well to eliminate strong scents after cooking (http://www.lampeberger.us/) -- after all, they were originally invented to help reduce the odors in hospitals and mortuaries! (you can read about their history at wikipedia: http://en.wikipedia.org/wiki/Fragrance_lamp). i use mine after a night of deep frying food to get that smell out. i'm pretty certain it would work on fish just as well.
Probably not the kind of answer you are hopping for, but in my case what my dad (he loves fish, mom and sisters dont) ended up doing was buying a second electric toaster-oven and just use an extension and cook it in the backyard... :S I guess you could use an electric or gas camping stove too. If there is no backyard... maybe rooftop?
Other than that its just fish fest whenever my mom is away got a trip or something :/
Many fish really only smell "fishy" when they're not longer fresh (there are some that just always smell potent, though). Most fish at your local supermarket isn't really at its peak. Unless she's extremely sensitive to the smell of all seafood, switching to different or fresher fish may leave your kitchen smelling better afterwords. For saltwater fish, the freshest fish will be the ones that were frozen on the boat and remain that way until you take it home to defrost properly. I also prefer my shrimp to be individually quick frozen (IQF).
This approach will limit your preparation methods, but broiling the fish seems to confine the smelling-up to basically the time between removing the fish from the oven and finishing eating it. It doesn't need to be a full broil; you can just put the oven up to broil with the fish removed and you'll still only need to cook it for 5 minutes or so.
Just make a little bowl of foil to fit the fish, spray hit some kind of non-stick spray, add the fish, add some sauce/fixings, pop it in the oven. It will be done before it has much chance to smell.