| While I certainly tried to avoid any flavorings, or vendors that couldn't tell me what was in their flavorings when I did use a vaporizer, the diacetyl scare is overblown. Regular cigarettes contain diacetyl in orders of magnitude greater concentrations.[1] We're talking about exposures to ten micrograms in various e-liquids, versus 7,000 micrograms for smokers. On a daily basis, in both cases. Even more curious, traditional smoking has not been shown to be a risk factor for bronchiolitis.[2] Should those flavors be avoided? Yeah, but I honestly wouldn't get hysterical over it. We're talking about fractions of micrograms in the end product. You certainly are exposed to far more diacetyl in second-hand smoke than a vaper is exposed to in a day, on average, in liquids that contain this flavoring. FYI: I quit smoking completely using e-cigarettes, and quit using e-cigarettes last year. I wrapped my own coils and built my own atomizers at one point, so I'm probably biased, but the numbers speak for themselves. To say nothing of my opinion on the hysteria over nicotine, which has never been shown to have strong reinforcing properties in any study. Nicotine, by itself, has simply never been shown to be more addictive than caffeine.[3] [1] http://onlinelibrary.wiley.com/doi/10.1002/tox.20153/abstrac... [2] http://www.tandfonline.com/doi/abs/10.3109/10408444.2014.882... [3] http://www.jneurosci.org/content/25/38/8593 |