We don’t have a 1950s-style house, but I know there must be Airbnb hosts who do. It would be sort of cool to host an experience that includes 1950s meals. You know, Jell-O with fruit in it, classic meatloaf made with ketchup, etc. All served on melamine dishes, of course.
Maybe even prepping a 1950s meal as part of the experience. Something in aspic for sure.
In my area, we can serve food without needing inspections or permits as long as we don’t charge separately for the food. We say our breakfast is complimentary. I’m sure that varies by location.