Flavor shelf life

[cany]

Going thru my stash and I see I have a lot of flavors that are  few yrs old whats your take on how long they last?

[FXRich]

I also have some flavors that are years old, I keep the flavors that are years old in the freezer. The flavors I use the most often I keep in a refrigerator. Last month I mixed up some cherry cheesecake, I haven't used the cheesecake flavor for several years, and it seemed to be fine. And it tastes pretty good. There is a bottle of vanilla extract in the kitchen cabinet (not for vaping)  that has no expiration date on it that we use and I know we have had for years. I looked at the bottles of flavor I have for vaping, and can't find a expiration date.

[cany]

Ill check my bottles for an expiration date