I remember in Elementary and Jr. High School science fair projects there was always a demo or two showing how Coke could dissolve a tooth within a week.......or something crazy like that.
yes...there is a coating in the inside of soda cans, and in mt dew it is called " GUM ARABIC" owned by the Bin laden family, no lie, after 9-11 people thought they could poisen american who drank dew