These 🤬 🤬.
Not only you're filling your own lungs with 🤬 by smoking these 🤬, you're also blowing obnoxious 🤬 on the faces of every 🤬 passer-by you encounter while doing so, and of course the 🤬 smell won't go away even after you've stopped the act itself for some time. Not to mention the fact it seems to be a mandatory thing for smokers to do it right by the 🤬 front entrance of a building instead of somewhere that isn't practically open for air (in these cases smoke) to enter the building itself.
In case you haven't already guessed, I voted SU.
That said, at least it isn't common for people to do it inside anymore, which is a rather positive thing.