It is yiurvlrivate family home, not a hospital setting.
You must make it clear to guests your home us not suitable for guests with nut allergies, food intolerances, allergies as it is not able to meet their specialist medical needs or personal needs.
It is not discriminatory if you make it clear in your listing....
....my family home has the kitchen in daily use by myself, where I daily prepare and cook meals for my family using a wide variety of ingredients including nuts, wheat flour, dairy produce and regretfully not suitable for guests with nut allergies, food intolerances or allergies.
Respectfully may I ask that you do not book accommodation in my family home but book elsewhere as I cannot accommodate your specialist dietary needs or personal needs.
Likewise in your listing, I have a rescue dog in my accomodation whose history I am not fully aware of and regretfully I cannot accommodate a service animal unless you wish to put your service animal in my outdoor unheated kennel some distance from my home as my own reduce pet is firmly embedded in my family home as part of the family.