I'm pretty sure it is the oil. Oil does not turn to steam; so you do not vape it. This is why it is known to clog up or choke attys. In cooking I have burnt olive oil, so I guess after the oil has coated the atty it begins to burn and that would create a less then desirable flavor.
That's what I was thinking. I've still got the spiced apple and it tastes very good but it's like 30% oil. I'll probably just dump that out too. So I paid $9.35 for 2 30ml empty bottles, ripoff and he's out of buisness. The old saying "You get what you pay for" applies here.