My girlfriend and I both vape and we love it. I've always noticed that she doesn't blow out as much vapor as I do. I had my sister try out my PV and she had the same issue. She took a nice big mouth inhale and didnt blow out near as much smoke. A second later I did the exact same thing and got tons of vapor. My girlfriend and I have spent at least an hour comparing our technique and trying to figure out whey she doesn't have as much vapor come out. We have no ideas. Everything is absolutely identical. We will use the same PV and do the exact same technique. Anybody know why she has so much less vapor production on exhale?