Thanks for your reply, and Alicia too. I have brought this up with Airbnb, and the answers I get, as well as the answers they have given to others, shows they don't get it. I will try again.
Besides vegan/veggie filter, they could help others if they had a filter for halal and for kosher.
A simple filter if the host identifies as male/female/prefer not to say would make searches easier for guests too.
But I suggest people try vegvisits and local vegan sites because as airbnb is so unaccommodating.
Thanks for understanding what I'm talking about.