E-Cigarettes. Do you know what's in them? Diacetyl in most of them. Do you know what that is? it's not good, and the FDA is not regulating. They pushed it back to the year 2022 to regulate.

Love you bikefixed, this post reminds me of so many dear relatives (though they're of the engineering persuasion).

"In brief," indeed, though the important stuff, i.e. relative dangers of ethylene glycol vs. propylene, was right up there at the top.

Exactly the information that was missing.

It's definitely common to you. To everyone here. You wouldn't be alive without it. Conscious of it? Not many folks need to be, frankly.