I've done as much homework on this as I can and here's what I determined. The Xanthan gum is the only possible thing that could be bad to
vape. It's a thickener that comes from a bunch of different sources and can possibly give you an allergy. Typically, it's used as a thickening agent and emulsifier. The largest amounts used however are around 1.5% of the final solution while most fluids that use the gum only use .5% or lower. It's not odd that they used a thickener when they should have used VG in the flavor. This is only my opinion... I'd try it. I would add a couple of drops in a 10ml bottle and shake it up. If there is any weird or funny tastes, then there you have it. Good luck and post your results, if you can. lol.