There's recently been a big uptake of juuling (a mass produced high nicotine concentration vape) with teenagers.

https://www.newyorker.com/magazine/2018/05/14/the-promise-of...

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

https://www.reddit.com/r/juul/comments/7xnhzm/juuling_in_sch...

https://news.ycombinator.com/item?id=17427712