Mountain Dew absolutely tastes like antifreeze, just a little thinner.
You're actually onto something here doc:
https://abcnews.go.com/blogs/health/2011/12/15/flame-retardant-in-your-mountain-dew-yep/There's flame retardant in your Mountain Dew. That soda with the lime-green hue (and other citrus-flavored bubbly pops) won't keep your insides fireproof, but it does contain brominated vegetable oil, a patented flame retardant for plastics that has been banned in foods throughout Europe and in Japan. Brominated vegetable oil, or BVO, which acts as an emulsifier in citrus-flavored soda drinks, is found in about 10 percent of sodas sold in the U.S.
"After a few extreme soda binges - not too far from what many [video] gamers regularly consume - a few patients have needed medical attention for skin lesions, memory loss and nerve disorders, all symptoms of overexposure to bromine," according to a recent article in Environmental News.
PepsiCo., owner of Mountain Dew, declined to comment on the brand-specific issue.