Earlier quoted context omitted.
It's hard to imagine flying passengers as being a "startup", but it really only dates from around the 60s. Today I know of people who can't fly at all (because they can't stop smoking long enough.) even short flights of a couple hours are out of reach. (I was once on a 2 hour flight that took 6 hours for reasons, and some of the passengers fairly sprinted in the destination airport to get to a smoking area at 1am) So…
Can't they get their 'fix' by applying a nicotine patch to their neck, or something?
I mean... intuitively, it seems like it should be, as the membranes there aren't substantially different - but it's odd that it's not been studied in particular.