You are, of course, free to choose as you wish proceeding by your own lights, but since smoking gets you 100 times the diacetyl of vaping I would not choose that course myself. It's also worth considering that even with 100 times the diacetyl of vaping no smoker has been diagnosed with popcorn lung from smoking cigarettes, although smoking does kill hundreds of thousands every year.
As long as we are going to have a debate about diketones it might be helpful to get some facts straight...
There is probably no eJuice on the market today that contains Diacetyl. What many eJuices do contain is Acetoin and AP. Popcorn workers got popcorn lung from a chemical that is not actually in our juice, or if it is, it's very rare. The Perfumer's Apprentice (a popular eJuice flavoring concentrate maker) makes a flavor called butter, it contains no Diacetyl, but is composed solely of AP and Acetoin (diluted into a PG base). If that doesn't have diacetyl then I suspect none of our flavoring components does
The linkage of AP and Acetoin to Diacetyl is, as I understand it, twofold. First, they are of a similar nature such that organic chemistry
theory links it- on a
theoretical level. Secondly, I think those two chemicals did some nasty things to some lab rodents. Lab rodents are not human so the link is somewhat indirect, to the extent that the chemicals exposed to popcorn workers is NOT the chemicals in our juice.
Sorry to belabor the point but every time I see a reference to diacetyl laden eJuice I shake my head because we can't seem to even get the basic facts straight. No offence intended to the member who I quoted, it has been done a number of times already and by some people who I would think would know the difference. Many people here are simply repeating what they've been told over and over (kinda reminds me of the theory of propaganda but I digress). OTOH, for other people facts are of little concern, and so on.
I truly hope I don't get popcorn lung from the bag of popcorn I popped while watching this thread develop. That could be the most dangerous part of the diketone debate!