Yeah, I swear some people have just burned out their own sense of smell. I had a patient fairly recently, baby of two-three months old (I don't specifically remember, but it was a little tyke) in with reactive airway disease/bronchiolitis. Came in the ER wheezing and squeaking with inflammed airways.
I get to the patient room and it takes me less than a second to figure out what the baby's problem is. Dad has just gotten out of the shower and apparently splashed around in some sort of fragrance... too strong to even take a guess or figure out what it smelled -like- there in the little closed-ventilation (Isolation for potential RSV pending some labs) room. Dear GAWD, it basically just burned down the back of my throat... that kind of application that you can literally TASTE the crap halfway across the room. It's shutting down MY airways, and this dude's there with a teeny baby that can't breathe with zero clue why that might be.
We're talking 'chemical pneumonitis' levels of corrosive fragrance clogging up the ole lungs. I flat-out TELL the guy what's what and the response is more of an irritated 'I can do what I want, what I wear is not any of your business, blah blah' response than concern for his own kid.
In light of THAT, it's pretty easy to see how these sorts of people don't give a damn about random strangers in the public venue if you can't get 'em to back off a bit to keep their own offspring from choking out.
"...narcissistic actions may have on the rest of us who enjoy in moderation..."
Oh, and by the way, THIS little bit of phrase covers a -lot- of ground outside the realm of fragrances. Primo point in general.