Haha I knew what your question was going to be before I even read it. It shouldn't smell all that good. All that CO2 coming off from the yeast tends to give you some funky smells. I wouldn't worry too much about the smell until you're ready to bottle. If you've got the brew in your bottling bucket and it still smells nasty, then I might be a little curious.
Whatever you do, don't stick your head into your fermenter and take a big whiff after a week of fermentation... it will take a long time for you to forget that smell