Before you use the others, I would at least blow the old juice out of them. Actually, I would most likely blow a mouthful of warm water through them, then keep blowing air until they sound like they're dry. That should take care of it, unless there is a really stubborn flavor in them.
By the way, leaving some PG or VG in them before storing them was a good thing. From what I've read, nichrome can rust. That foul-tasting "shipping fluid" that needs to be blown out of a new atty is supposed to be plain PG put in there at the factory. It's just old and funky-tasting.