The "Halo Funk"

If you're familiar with Halo ejuices, then you know exactly what I'm talking about. That aroma that all Halo ejuice comes with. You don't even have to open the bottles or even the package to smell it. It's intoxicating, and I friggen love it.

It's this really nice faint smokeiness aroma that all Halo ejuices have, and it gets even better when vaping them.

How do I get the "Halo funk". What concentrate/raw chemical is needed to get this into my ejuice?

There was some reference to it on ECF here, but it wasn't that helpful. Anyone have any idea about it?