i am an e cig vaper who made a life changing switch 4 months ago w/0 analogs to date!!! the company i work for has a zero tolarance for alcohol and we are subject to random testing. my e-liq. is (pg)propylene glycol based cut with (vg)50/50 and my understanding is pg is alcohol based. do i have a reason for concern??? have been reading this fourm everyday and have not found anything on this subject! may have to switch to vg only,