Great article! You really have an amazing and professional, but still entertaining way of writing this down!
I just finished a post on indoor air pollution, which is actually a more serious problem than outdoor air pollution. And of course, smoking is one habit that adds to the toxins in our homes. From what you present here, it seems that the body is much less taxed by vaping than by smoking. The same goes for our home environment. Who knows, vaping might really have the future :).