system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why don't all of the companies that make antifreeze add chemicals to make it taste and smell unpalatable?
gpt
from a poison control standpoint it will always taste sweet - it's an glycol molecule which is sugar - you can't take away the "sweet" factor.  In addition a ton of studies have been preformed on the chemicals which are used to make toxic things taste bad-  like Bitrex and others added to nail polish and toxic chemicals.  Basically all the studies came to the conclusion that they don't help prevent poisonings- sometimes suicides from those compounds but not accidental ingestion-  there are a select number of humans (mostly children) who actually like the bitter taste they impart and animals usually don't care.  Bottom line a bitter agent is a gimmick which provides statistically no benefit to reduce harm in consumer products.