Such an old thread, I know, but I'm a fan of GPN.
Medi-one is derived from fish, kelp and blood meal with added potassium, I'm pretty sure. I know that a lot of "organic" liquid ferts and nutes are usually horrible smelling, but that's because the nutrients are obtained through natural sources and are highly concentrated. Imagine liquid poop. That's basically it, but not actually made from poop. ;)
I'm actually certain that Massive (from Green Planet) is an organically derived product. Not 100% organic, but the nutrients in it are derived from organic sources.