Mesdag Museum , 14 September-13 November 1994, no
Because the addiction is to nicotine, people who smoke low-nicotine cigarettes undergo compensatory smoking, in which they inhale more frequently and more deeply to maintain their blood nicotine levels
The concern would be that, for nonsmokers and teens, e-cigs become a gateway to nicotine addiction. In addition, the long-term effects of substances found in vape liquids, like propylene glycol, are still unknown, so until we have more definitive data, caution is the watchword
I suggest tipping them well, as this is technically against Ubers TOS
Clean, high-quality, and responsibly grown