Sometimes you’ll get a burned chemical taste, this is because the coils are either overheating or theres some gunk somewhere, its safe, it may cause a headache but its better then smoking 1k+ chemicals laced on a tobacco leaf
I’ll post updates on my vaping adventure. I used to smoke the ejuice but it was too hard to change vape stuff and clean so often, Juul is on to something, they just need some kind of stack that checks temperature, maybe something open source?