[ceejayoz]

Does such a vape exist? One with 100% pure, nothing-else nicotine? No propylene glycol or glycerine?

[ben1040]

It's been questioned whether that estimate is low, but the frequently cited LD50 for nicotine is 0.8-1 mg/kg, so by that metric a .7 mL Juul pod of pure nicotine would be more than a lethal dose.

https://en.wikipedia.org/wiki/Nicotine_poisoning