As others have stated, nothing to worry about, especially at that nic level. The amount needed to actually get nic poisoning at that mg would be outstanding, i'm not sure the average vaper would have enough eliquid to get to that point at that mg. So nothing to worry about, I vape a good bit while I am at home. If you are really worried about it that much, just get some 0mg juice if you just like the sensation of vaping.