Numbered from left to right is 1 through 7. Numbers 1, 3, and 5 are ones I use all of the time. So they are fresh. 2 is MBV Apfelstrudel (over a year old), 4 is VapeJoose Hollywood Blackout (over a year old), 5 is VapeJoose Orange Dream (over a year old), and 7 Sweet-Vapes Starbuckets Cappuccino (only 3 months old).
I am not going to lie to you. The ones that are over a year old does not taste like they did when I filled them. Maybe something like 70% what they originally did. I believe the nicotine has broken down some and some flavorings also doesn't age too well.
And that VapeJoose Orange Dream is a different story and turned really bad in the last few months and it was just too bad to vape. I also had a bottle of it in the room here and that bottle was just as bad as the tank. So I got rid of both of them and cleaned the tank. I still have three 120ml bottles of it still in my vape frig (a tad fresher, born last May). It still looks good, I guess I should try some of it, eh? ... I just cracked the cap open and it smells ok... dripped some in my RDA... oh... peppery... so the nicotine has broken down. So I got to get rid of that stuff too.
Well spring is here. Maybe this is a good time to clean the rest of those older tanks, eh? I rebuilt those coils a few months ago, so those should be still fine.