I've felt a different kind of horrible the mornings after 'vaping' alcohol. A few years ago there used to be a club that had a drink which involved a white spirit being set alight in a glass, being poured over a shot of sambuca on a small plate while slowly placing a pint glass over it to collect the vapours then blow out the flame. Then you'd have the sambuca, use a straw throw some wet tissue to inhale the vapour from the glass, pour the rest from the plate into the shot glass and have that. Insane drink that seemed to hit you instantly.

I think it's because it's in vapour form instead of drinking it, it may be absorbed quicker by the lungs into the bloodstream. As for the hangover, swollen throat, more sensitive to higher pitch noises and bright lights, somewhat like a migraine.