@Susan612 The many, many times you've tried to resurrect this topic, hosts have pointed out many reasons this would not be a good idea. I'm sure you'll never be persuaded of that, but you're not the party that will be held liable and risk losing income when a guest reports that an accessibility amenity was not delivered.
Hosts would be really unwise to guarantee a "fragrance free" environment, when all it takes to be in breach of contract is the guest saying they smell something.
Rather than beating this dead horse even further, can I offer you an alternative idea to campaign on? In its early days, Airbnb used to offer a keyword search for listings. Bringing back that feature would allow guests with a broad spectrum of specific interests, lifestyles, and needs to connect with similarly inclined hosts and locate uniquely suitable homes. Private Room guests seeking social stays with people who share common identity or who want first-hand contact with a different one (e.g. vegan, Buddhist, Nudist, LGBT). Entire Home guests looking for homes containing a rare or regionally-specific amenity. Farmstay guests who want to be around a specific animal. And, indeed, fragrance-sensitive guests like yourself, seeking hosts who share your condition and are uniquely able to accommodate it. Hosts benefit from not getting boxed into a corner with a vague filter tickbox that locks them into guaranteeing any of these things as a feature, and getting guests who are likelier to appreciate the unique qualities of their homes.
Everybody wins, and you can attract a hell of a lot more people to your cause than you've managed up to now.
