This is my very first post on Curezone (Like you I have been reading and learning from lots of folks on here, esp. Hve, for my own health issues)...
Reading your post reminded me a bit of an episode I watched on 'Mystery Diagnosis' not too long ago. I'm not sure if I can post links here, but perhaps you can google "Cheryl Marshall" and/or "Trimethylaminuria"....which is a metabolic disorder of the liver which cannot fully metabolize certain foods (meat/eggs).
My apologies for not typing out more, providing a link...I am brand new here, but perhaps if you do an internet search and just read a bit about it?