only a few i can think of that could fool ppl who are experienced in mary jane most common is the e-cig
filled thc oil juice or mix and for vapes would be the puff-it
honestly your not going to fool most ppl and certainly not cops if worried keep it clean carry pipe tobacco vape some if...
Just wondering if anyone has done this since you could control the temp with a vaporizer one with forced air and a whip one could produce oil for a single effect by staying below the higher temps.
one would just pump ice thru to produce the oil from vapor. than warm water to get it flow down?