I buy the Diet Pepsi 36 pack cases from Sams, frequently, OFTEN, and always, for years. I purchased 3 a week ago with an expiration date of Nov 22 2021. [protected] code on bottom. All 3 cases with same code, all cases tasted just awful, weird, almost like chemicals or perfume? Tried several from each thinking maybe it is just me? Tried to do an internet search to find any other complaints or something? The only thing I could find that possibly maybe is that systems were not clean and taste of cherry coke, which I do not like, have bought on accident. Hopefully that is all it is. I am taking them back to Sams today in hopes of a refund. Sally Rector 9330 Sandy Valley Rd., Hillsboro MO 63050 [protected]@gmail.com