If it takes you 2 months to go through a bottle of nicotine, you are probably fine just keeping it refrigerated. If you want to freeze it instead, that is probably fine, you'll just have to wait a bit for it to warm up so you can use it more easily. But, most nicotine stored for 2 months in a fridge is not going to go bad in my opinion. I have some of my stash frozen, but once I get a bottle out of the freezer, the remainder goes in my fridge until I can use it. You could really do either.
I think the OP was talking about commercial liquids though, and if so, it's likely unnecessary to refrigerate or freeze unless you don't think you'll get through and vaping that bottle within a year (with the caveat that yes, some eliquids do better and taste better more fresh (citrus seems to be a main culprit as far as "fading out" of flavors. So, it will also depend what e-liquid you have. I kind of see "cold" as a way of slowing down or halting flavor reactions, so lets say you have a bottle you may vape 5 months from now, if you taste it and the flavor is outstanding, that might be a time to refrigerate, as it shows the e-liquid is well enough steeped to give you good results. But I'd say overall, freezing liquids isn't necessary, a cool dry area may be beneficial for storage, and people have various preferences with their eliquids as far as if they keep them even colder, or not.
I think you may want to do some experimenting on your own, every palate is different. But there's nothing terribly wrong (usually) with regular storage somewhere away from light and heat and that doesn't necessarily have to be the refrigerator.
Anna
