You speak of vaping spice and the "plastic" smell and taste.
I use a VG and a GVG. Ever since I started using those, "plastic" signature smell and taste are a thing of the past.
If you are vaping crystals properly, I don't believe you should really have any taste, odor, or even "know" that you have anything in your lungs, until you start dissolving!!!!!
I had a friend die after using datura, jimson weed, devil's weed, whatever.............
I Have also used it several times long ago, but strongly advise against it........
WARNING!! Datura Can Kill
Normans tek is great. No Acid, No filtering, No PH meter or strips needed, quick, hi yield, fluffy pure snow, IMAO. STB Normans for the masses.................
Travel safely.
Namaste