There is not enough controversy in this thread so I submit the following reply:
I’m (not) Dead serious, I find it hard to believe anyone would condone or suggest to students of mixology to ingest, even in small quantities, a toxic substance. E-liquid is not intended to be consumed by drinking it. I believe the flavors can be tested by mixing it into a volume of water, smell it and swish a bit in your mouth to allow the taste buds to experience the flavor, then spit and rinse your mouth out.
source of information, Dioscorides:
Mr Dioscorides is an animal killer, I refuse to be one of his experiments to make e-liquid