I've seen some vendors begin disclosing liquid ingredients on bottles .. it will require a magnifying glass to read, but they are there ..
Claiming the OP is trolling does not seem to be a very productive way to answer what are likely legit questions ..
And lastly, to the OP .. ECF is lightweight and gentle even in a worst case when compared to many, many other Forums .. sometimes life requires a thick skin ..
I'm sorry, but they're not legitimate questions because if you read the OP's post history, it's clear that these kinds of questions never get answered to their satisfaction. Anyone who knows what's in e-liquid knows that aside from the nicotine, you and the people around you will ingest, inhale or topically apply many times more of the stuff that's in our juice.
They have been for decades, with no documented ill affects other than those caused by normal, human allergic reactions in cases that are quite rare.
These are the same kinds of folks who think that 9/11 was an inside job, that the Federal Reserve is in cahoots with the Tripartite thingie to hoard all of the gold supplies in the world, that Bill Clinton peddled/imported drugs from Mena, Arkansas, that genetically modified foods are a conspiracy to make us all sick, that the Apollo 11 mission was filmed in Hollywood. They see conspiracies, secrets and black helicopters everywhere they go.
They
always have questions and refuse to accept even the best answers given. Give them answers and all they do is come up with the same questions, worded differently. Then they accuse you of being defensive.
They've been around since I hosted a FidoNet node back in the early 1990's. Ever since Al Gore invented the internet and automagically gave them World Wide Web access, they've gotten even greater access to the information they crave to feed their fears and to create all of those Rube Goldberg concoctions of ways that imaginary bad guys can make them hurt.
The best/worst troll is a troll that doesn't know he's a troll.
The best place to send these folks is...
Crayon Physics Deluxe
Keeps'em busy for days.