Dr. Konstantinos Farsalinos on CASAA's Facebook page:
"Because you should not inhale oil vapors. It is very dangerous. Oil-based liquids should DEFINITELY NOT be used with e-cigarettes. No ifs, buts or any kind of discussion... They should not even be used in flavorings. Some vendors are so ignorant and dangerous.... This is a really sad thing..."
Light vegetable oil base (grapeseed oil or other light vegetable), are lipid based material and should never be inhaled! they carry a risk of developing Lipid pneumonia (
Lipid pneumonia - Wikipedia, the free encyclopedia) (
Exogenous lipoid pneumonia. [Arch Intern Med. 1994] - PubMed - NCBI) For those that do not know this has been detected at least once (
BBC News - Gateshead doctor calls for research into 'e-cigarettes')
There's a list of vape-"safe" flavours somewhere here, on ECF, but any flavour is an additional risk since most of them are made for ingestion only and are not stable under the higher temperatures of our attomizers and can affect human cells in a ugly way. Definately a "NO!" are sweet, fruity, vanilla, cookie, cola, lavender, other plant aromas such as mint/menthol, etc, yeah just check the list.. I personally vape unflavoured or VERY slightly flavoured diy juices and use only standard tobacco aroma. One thing to remember is that if you can't mix it with water, you definately shouldn't vape it.