Who drinks Malt Liquor?

That's funny you mention formaldehyde: We (B. Co, USMC, Subic Bay, PI) used to get trashed on Red Horse (that's all Marines drank there) the night before a 5 mile company run and during the run guys would drop out puking just to get right back in the formation..and the smell of our sweat was ....formaldehyde? Weirdest thing, but we were all 18-19 years old and bulletproof so we just kept going. Try that today and I would die. Damn, this King Cobra is going down easy.....WTH?
Something you need to remember, and I didn't realize this until I got into brewing and studied distilling. Brewing and wine making leave all the nasties in the juice. When distilling, chemicals like Acetaldehyde, Acetone, Esters, and Methanol are in the foreshots and heads and are usually removed. The heads are next and are the good part. Ethanol. What we all want. Now comes the Tails. Chemicals like Propanol, Butyl Alcohol, Isobutyl Carbinol, Fusel Alcohols, Acetic Acids, and Furfural are in that mix and most of that are removed as well. (I had to look those up. Some I can't even pronounce. LOL) Now, that's what happens with distilling, the nasties are taken out in the process. With beer and wine making, all those chemicals stay in the finished product because the wash or mash is not distilled in the beermaking process or wine making process. Headaches and hangovers? Look up some of those chemicals and see why. @Sublime one