Propylene glycol is commonly found in many packaged foods, such as drink mixes, dressings, dried soups, cake mix, soft drinks, popcorn, food coloring, fast foods, bread and dairy products (
6).
It is also used in injectable medications, like lorazepam, and in some creams and ointments that are applied to the skin, such as corticosteroids (
2,
7).
Due to its chemical properties, it is also found in a wide variety of hygiene and cosmetic products.
Additionally, it is used in industrial products like paint, antifreeze, artificial smoke and e-cigarettes (2, 6).
https://www.healthline.com/nutrition/propylene-glycol#section2
According to Alko, the substance isn’t necessarily detrimental to individuals’ health, although it is used in a wide range of cases from de-icing compounds in the aviation industry to the preparation of snack foods. It’s also used in alcoholic beverages as a flavour carrier.
there are different kinds of antifreeze and that the antifreeze that contains propylene glycol is less toxic and more environmentally safe than antifreeze that contains ethylene glycol, which is toxic to humans.
https://www.snopes.com/fact-check/schnapp-judgment/
Either way its a chemical that has no business in our food supply.