How can you run a reef tank without using carbon ?

[Casey8]

As someone here may have been aware that I had been having a problem with carbon lately, so I didn't use any carbon at all in my tank for a few weeks now. But now, I have came up with another problem. Without using carbon, it stinks up with a fishy smell in my bedroom and slowly travelling into my livingroom too. It smells too fishy that I get to the point that I can't handle it any longer. Can someone here that is running their tank without carbon, tell me any tricks on how I can get rid of this smell ?
Thanks for your input.