I have searched this forum and can't seem to find an answer to my question. I am trying to figure out when vaping with 18mg nicotine strength, how many cigarettes is that equal to, i.e. a 1.2ml cartridge of 18mg nictorine strength is equal or comparable to how many cigarettes? I used to smoke a regular-strength cigarette (not lights) and the 18mg is what the sales person recommended to me.

Any help you can give will be greatly appreciated!