I have been hosting a place in Sedona that is primarily conceived for people w/MCS, mold issues, fragrances issues and electrosensitivity:
https://www.vrbo.com/9630568ha
https://www.airbnb.com/rooms/53493297?source_impression_id=p3_1655841479_jOMlsws2J%2BLU2q29
One issue is that neither VRBO nor Airbnb or other booking sites, none of them have a section for this category. The second issue is that you will have to cater to this clientele, and the other clientele who does not care. It requires extremely detailed cleaning and make sure that the pillow cases, all bedding and towels will not have any smell residues on it. I posted a reminder in the BA with reference to the AD Bill. Sometimes it is difficult because people are so toxic that they even do not smell their own scented products anymore and keep using them, thinking it is OK. Others just don;t care. I provide all unscented personal care products, as well as unscented Seventh Generation laundry soap and dish soap.
As for the electrosensitivity, we removed the Smart meter, provide wired Internet and no smart device on the whole property. Dirty electricity has been remediated. However, people were so freaking out with the wired Ethernet and no wifi, we finally offered a very small router, that is unplugged and does not pollute the rest of the property, but so clients have options. People are SO addicted to their digital devices, it is so sad.
The bedding is all organic, no off-gassing. All is new, high-quality, coffee is organic, etc..
We spent a lot of money remodeling this rental with natural materials, for luxury items and exceptional decoration.
It is obvious that many clients appreciate it. Alas, still too many "pigs" out there, who have no clue, do not read the description, don't care, don't appreciate, will use their own fragrance, and they are those who complain. Booking sites are not discriminating and that is a shame. Airbnb does not allow rating the clients, which is a prejudice against owners. If they are" smelling the place up", despite policies, rental agreement etc. booking websites and the management company Evolve will not do anything. You will have to throw pillow cases out, towels, because they are so smelly, they cannot be re-used.
I also wish I could market it directly to this specific clientele, but no website/platform exists for that purpose. Airbnb, VRBO, Evolve, etc. have a long way to go to accommodate those who just don't travel because most rentals are so toxic. and because there is not special section for this increasing particular clientele, so it makes the search difficult.