Rei GoreTex coat and THE BEAST

There was an episode of seinfeld where a Valet made Jerry's car smell bad and nothing could stop it. I'm having that problem with my coat. Does anyone have any ideas for making smell leave goretex/nylon? I've washed it, I've tried febreeze, I've aired it out. And the smell remains. I don't know what caused the smell. It was in my car for a while (which doesn't smell too bad) and then it smelled like this. and it's been several months since the smell first started. The smell is kind a kind of musky b-o thing.