can tobacco cause mouth ulcers The 'painful' side effect of quitting smoking found in the 17 Mouth & Tongue Problems:
Description
It grows with you

Tolerance Is Not Limitless The idea that it is OK to smoke in open areas and outdoor public spaces is something that non-smokers have tolerated for a long time

doi: 10.1016/j.brainresrev.2004.09.003

He began his criminal career, at the age of thirty, as a member of a gang of toughs who stole a million dollars worth of securities by hanging around Wall Street brokerage-house delivery windows, posing as bona-fide messengers

It sort of depends on who you know and how you conduct yourself, but it can be dangerous, obviously