I'm not sure why you are not getting high off the Volcano. But the whole point of vaporizing is that you don't get that huge plume of "smoke." If you are, then you are not really vaporizing properly. I'd suggest getting a unit that has a glass heater cover for the heating element, this way you can tell if it's getting singed by combustion. As long as you are properly vaporizing, your lungs will expand to they oxygen and cannabanoids rather than CO2. Try turning down the heat and see if you get a better buzz...