I've had this happen to me twice.. The first time I was at a vape competition/meet and I just kept dripping for about 2 hours on end and the whole room was full of smoke so I'm guessing I got some through there. All of a sudden I got a wicked headache, felt very nauseous, and couldn't even think about puffing on any vapor.. The second time it happened I was just chain smoking on my mech mod and I vaped a lot more than I typically due and I got the same symptoms.. Have you guys ever experienced this? Any cures for it? I only use 3mg nicotine as well. Before vaping I was not a heavy smoker by any means I'd smoke maybe 3-4 ciggs a day and this was only for about a year. But this is a real thing, right? I can't go too much lower on the nicotine level besides 0mg.. I'm thinking of gettng a bottle of thatf for when I'm chain vaping and just doing smoke tricks or what not.