You missed the point, methanol/ethanol and sometimes pyridine mixtures are commonplace although less so in many jurisdictions nowadays. Not only are people temp

You missed the point, methanol/ethanol and sometimes pyridine mixtures are commonplace although less so in many jurisdictions nowadays. Not only are people tempted to drink these mixtures they in fact deliberately do for their intoxicating effects - even though they know the stuff is poisonous (even conspicuous warning labels on the bottles marked 'POISON' don't stop them). In one very hot town I know the local store kept bottles of the stuff in the refrigerator for the local 'metho' drinkers - no, this isn't an exaggeration! Whilst many of these formulations were deliberately introduced to denature ethanol so that it could be sold without having duty added, overall they've had a serious delitarious effect in that the negative outcomes from a public health perspective were much, much worse than various governments losing a few dollars in excise duty. After about a century or more, more enlightened regimes have come to the conclusion that if nothing else it's cheaper not to poison citizens who insist in imbibing the poison and they've now swapped out the methanol, etc. for Bitrex/denatonium as a non-toxic denaturant alternative. I don't know where you live but where I do the methanaion of ethanol was commonplace until recent years. Moreover, toxic pyridine was added to make the mixture stink and yet people still drank it. Although never having been tempted myself, even I'm happy the methanol has gone as I regularly use many litres of ethanol as a cleaning agent. Before the methanol was removed I had to use the less dangerous isopropyl alcohol (propan-2-ol) for safety which was much more expensive. The fact that methanol/ethanol mixtures were (and are) so commonplace and the fact that they've been around for so long - and that trade between jurisdictions with different poison standards is common - we cannot assume any nonfood ethanol (or ethanol as solvent, i.e.: in shellac) is pure or that the only 'additive' is water unless marked BP/pharmaceutical/lab grade, etc. Essentially, the longstanding practice of mixing these two alcohols for industrial use hasn't entirely been forgotten and that habit/old practice lingers. We've seen evidence of this recently when temporary ethanol shortages led to unscrupulous suppliers substituting methanol in hand sanitizers and the CDC having to take action.