

Sorry, should have been clear. Lethal allergen tour = bad. Banning completely = also bad.
My main point was that there is a line between discomfort and danger. That line can move based on the situation, so it is awkward to abstract without getting down to specifics.
If say 5% of the population suddenly developed a tendency to go into anaphylactic shock on exposure to vanilla, then you could easily see it disappearing from fragrances altogether and becoming a non-problem in that regard. Yet it would still have culinary use and join many friends on the bolded ingredient lists on food.
There is a turnover point (that I cannot explicitly define) where the onus is on the afflicted to ensure their own safety, rather than the population at large going out of their way to ensure it.
I am fortunate to have no issues like this. In 5% Vanilla-Death-Land, the smell of the stuff would still give me pause, as I probably know someone who could well die from the idiot that just walked in the door honking of it.
If the same person instead just brought in a vanilla milkshake, I probably wouldn’t bat an eye.
So many varieties, it would be like trying to list “stew”.
Frequently contains garlic, so go with no just to be safe. Our creature (in pfp) loves the smell and always thinks he’s getting some, bless.