The stomach thing is my whole issue, which is such a bummer. In fact, there haven't been any juices that were unvapable for me that had to do with taste - I actually love the taste of all the juices I had to sell or trade - just sometimes certain ingredients hit my stomach like lava...
I'm with you. I'm pretty tolerant of most any flavor, but the stomach thing is obnoxious. I've been trying to narrow it down--could be the tobacco Absolute in some of my liquids. Unfortunately, I've been mixing a lot in the recent past, which makes it tough to pinpoint. As soon as I do, the culprit is going in the trash. I'd like to put together a good array of regular vapes so I don't have to think about it anymore.