Actually the vape question is a good one, because it is not the nicotine that causes this effect it is actually polycyclic aromatic hydrocarbons (PAH) and other tar-like compounds in tobacco smoke that increase the activity of liver enzymes thus decreasing the effectiveness of many benzos. For example: (dip, chew, snus, gum, patches, etc...) do not have any kind of effect on benzos. So the question remains do e-cigs produce PAHs? And if they do at what level?
I would imagine the higher the temp at which the e-juice burns the higher the likelihood that it would produce PAHs. I would imagine drip tanks with mechanical mods or box mods set to 100+ watts would have a higher likelihood of doing this than say someone using a subtank or atlantis on a sub-ohm setup.
Not a whole lot of studies have been done on e-cigs so I do not know if they emit PAHs or not. If they do, it will effect it. If not then you are good to go.
edit: actually I just found this
http://ehp.niehs.nih.gov/122-a244/
E-cigarettes may also expose bystanders to emissions, although research in this area is only just beginning. One team of researchers observed increased indoor air levels—albeit less than those associated with tobacco cigarettes—of coarse particulate matter, polycyclic aromatic hydrocarbons, and aluminum following indoor vaping sessions lasting two hours each.
So, I guess it is possible but the studies do not mention the specifics, AKA: wattage, juice used, temp, coil setup, etc.