Please see these 3 posts in my blog http://mpdela.blogspot.com/search?q=leaky+gut that explain what a leaky gut syndrome is. It is not actually feces seaping into your bloodstream, it that were the case, it would be life-threatening. These articles will explain it. You might also want to see Dr. Hyman's blog http://www.ultrawellness.com/blog/ultrawellness-key-3 in which he addresses your 'inner tube' (your gut), and he has good suggestions.
We will be posting more information in the near future on this and other gut issues in our blog.
I have heard good things about glutamine, and wish I knew more about colostrum (have read only a little on it). I afraid that anything from the sea may produce more ordor, especially fish and shellfish, though I don't know about shark liver oil. I would shy away from that.
This treatment plan is also low in protein and thus good for helping your system not smell after being on it for a couple of months.
I also suggest you read how my son managed to pretty much eliminate his extremely strong odor that he had for 8 years. It's pretty much following the NIH protocol. Here's a post I did here in CureZone on how he did it, http://curezone.com/forums/fm.asp?i=1191287