Yep we've known about this for years. There are even some guys that do chemical analysis of some mixes that result in some very scathing letters regarding aceto

Yep we've known about this for years. There are even some guys that do chemical analysis of some mixes that result in some very scathing letters regarding acetoin and diacetyl contents. The "bad shit" list for ejuice is usually artificial sweeteners, acetoin, and diacetyl.