Well there is that. Still, I’ve found scents to be more bothersome at a time when I’m trying to sing than they would otherwise be.
And I would hope that if people realized that the scent caused you a problem they would refrain from wearing any. However, I was amazed that our choir had to be told repeatedly not to wear perfume for concerts because one or two people refused to stop. I think at least one person even quit the choir over it.