As it happens, hand sanitizer does get banned from time to time because it can be used as an alcoholic beverage if you are desperate enough. They add a bitterant, along with Aloe-with-soothing-action and focus-group-citrus-scent and whatnot; but your basic Purell is ~70 ethanol, under 5% isopropanol, and contains none of the more...aggressive...denaturants because that would make it unsuitable for frequent skin contact.
Compared to even a $10 handle of Mostly Not Xylene!(tm) brand vodka, it's not exactly the choice of champions. However, if you are in prison or middle school, it may beat your other options.