Well, TBF, the pans and plates can be washed; the smell is harder to get rid of.
If my mother was staying in my home, then absolutely I'd expect her to do me the courtesy of respecting my dietary choices, especially since she deliberately and maliciously made quite a point of not doing so when I was a child (so, yeah, there's history
).
Actually, the problem would never arise, because I'd never have her to stay.
But it did arise when I was married, and I was in no position to complain or criticise. And there were certain food cooking smells which I really did find repulsive, not from any ideological basis, but simply because they were repellent. Fish was bad, and cheap'n'nasty bacon - oddly (or perhaps not), decent locally-produced bacon didn't seem to have the same effect on my nostrils (and appetite). I did get acclimatised to it, and I really, really notice it now when I encounter it, having got used to a house that doesn't smell of cooking meat ever. I've surprised myself slightly by becoming (quietly) quite militantly vegetarian - I think I'd have a real problem living with a meat eater again now.