SO my room mate bought a volcano vaporizer about a year ago. At first it was great, I would hit it and it was super smooth and would fuck your shit up. Over time though I began coughing which has escalated to the worst coughing Ive ever had consistently. More than that though, I think my throat actually closes up because I start wheezing and have trouble getting a good breath in at all sometimes. When I smoked a regular bowl it was fine though. I also after a while stopped getting high from the volcano. Or at least I had to smoke a ton which was really difficult. I can't think of any reason why this is happening unless there is some difference in the chemical reaction (burning vs vaporizing) that I am allergic to or something, but I don't know anything about that. Has anyone experienced anything like this? I smoke several times a day and have for years so I am not new to weed and different methods of ingesting it, this is the only thing that makes me feel like this.