Comments
Sorry for my ignorance, but wouldn't it be best to leave the lid uncapped during this?
You do that if you want to let the juice breathe (Let alcohol or some other offensive taste out) If the juice doesn't have anything like that in it then you're doing more harm than good with the cap off.
Ohh okay, so standard VG/PG and some PG flavorings doesn't need to breathe?
Usually I'll breathe a bottle if it has a perfumey taste to it, or it gives you that feeling on your tongue and sinuses that is akin to inhaling perfume (hard to describe)
Off the top of my head the Snake Oil clone over on ELR has it (when you shake and vape) so I'll breathe it during its warm bath. =)
- Edited for clarity