I'm sorry you have very severe asthma.
But I don't understand why ALL tenants should not be allowed to keep pets because one day in the future you might want to move into that property.
Do you understand how unworkable that policy is?
the most recent data suggest that pet ownership has increased over the pandemic from 52%
59% of people living in the UK now own pets
As you also wouldn't be able to purchase a property?
Or rent from the council?
Why should this only affect tenants.
As you would still need to live somewhere that is unfurnished with a hard floor and a deep clean to stay safe.
Also at the moment- many ,many people get pets and do not tell their landlord.
So you cannot assume a rented property has had pets than any other property, as their is a huge incentive to omit this detail at present.
What this brilliant policy will encourage is more stability for tenants and for landlords to provide wood flooring on unfurnished properties.
So will make your life actually easier.....
Message to landlords----
I do not want to look after your 20 year old brown DFS sofa/ 15 year old broken billy bookcase, 70 year old table (too big) for the dinning room. I would rather buy my own.
I (like most) tenants want unfurnished or a least the option to keep or remove your horrible furniture.
I would prefer a wood floor- as I can add my own rugs/flooring. This is cheaper (in the long run) for you and better for me.