Thanks to everyone for the tips and advise, but I'm still confused about the sheer nastiness of my experience. From reading around, it sounds like something in the cartomizer might have been burnt, or something.
I promise, I'm not being picky about this... is was noxious. What could do that to such an extreme? Are the Chinese trying to kill me by putting liquid rat poison in Go-Go cartomizers? It was that bad.
I'm sure it's chinese juice that's in the carto. Not that that's a bad thing, they invented the ecig. But some people find the juice harsh. Other's love it for the throat hit. Different strokes. Many US vendors mix to order and you select pg/vg ratio.
I happen to like the juice from nhalers, Backwoods Brew and Vapor Bomb. But there are tons of fine juice suppliers out there. It may take you a few tries to find the perfect juice for you. You could try the classifieds and try a bunch of samples from different vendors.