You can't babyproof literally everything that may be of slight concern or even theoretical risk. Additionally, Wizard's Den is 16+ - I don't believe a 16yo drinking antifreeze because they saw it on a video game is a concern. Little Timmy might, but kids get banned pretty quick for... well, writing like children, and any poisonous substances should be well secured by guardians, not to mention the bottles literally say poison. Also, Little Timmy shouldn't even be playing this game - parents should be watching their kids to make sure they're not playing fucking Postal 2 or something. This is very much a game for mature audiences, too.
People can explode into steaming piles of gore, drink unholy amounts of alcohol until they die, overdose on over-the-counter medication until they die, do massive amounts of methamphetamine until they die, turn other people into burgers and eat them, shoot other people and cruelly laugh at them as the life leaves their body, etc. I think the name of a drink is a pretty minor concern.