Antifreeze is Ethylene Glycol.
Popcorn was caused by YEARS of heavy exposure to diacetyl (Acetoin) which are being phased out by most reputable manufacturers.
Interesting read.
Here's the full article.
https://www.realclearpolitics.com/articles/2019/02/25/stop_earning_the_enemy_of_the_people_label_139569.html
Stop Earning the 'Enemy of the People' Label