So I've had a Sodastream for maybe 2 years now. Had a diet cola flavored one that I've had for a while and found it tasting weird last night. Checked the expiration date and I was good, but then noticed it says to refrigerate after opening, which I've never done for these.
I could have sworn the regular soda type didn't need refrigeration and only the fruit drops did wtf lol. Usually it doesn't take me that long to go through one so maybe it didn't make much of a difference, and only did when this one has been around for several months.