The levels of PG are not going to harm you, thats my opinoin on the matter. The traces are so small, for instance the juice I have has only the pg in it, no dg. The announce this statement, and everyone is scared. The traces are so infinite, how much pollution is in the air when u walk outside. My 6 year old loves the fact, that i use my "fake" cigarette, (thats what she calls it). It diccipates after you blow it out, if it was really that dangerous, it would loft around, and affect ur house like smoke. For instance, I have been vaping in my house for 3 months now, and there it hasnt made the quality of the air any different than normal. Once real informative testing is done in the US then i guess, people wont be so scared. But, I have received actual ingredients for my juice, and now what in it, and now it passes all regulations overseas. Did u guys worry this much when u smoked, over 10,000 chemicals in one cigarette. To only one smally traced bad chemical in the ecig, with a limited test. Dont be that worried, real proof will start surfacing, as real unbiased testing is being done now. Look at it this way, any of us could be dead tomarrow, from a car accident. worrying ur life away will not help anything. Keep on vaping.