@Paul154
I agree. If a guest has an allergy or a personal dislike of these products, they should inform the host in advance, ideally before they book.
I tend to buy laundry products for 'sensitive' skin because it's what I prefer and then there is less likelihood of it causing problems for guests, but that should not be a given. I am also always experimenting with more traditional and less chemical cleaning products.
I also think it's a bit presumptuous to state that a host that uses fragranced products has a dirty home and is trying to mask smells and mould. In the UK at least, fragranced laundry and cleaning products are standard (even a lot of the 'sensitive' and 'eco' ones) and you have to go out of your way to avoid them, i.e. you can't necessarily just pop down to the supermarket and find everything you need fragrance free.
Also, I often see US hosts refer to using Borax and have seen this suggested on US websites and blogs as a 'natural' laundry and cleaning product. Borax has been banned in the UK because it is highly toxic. I would NEVER use it in my home. You can, however, buy Borax substitues, which I haven't tried out yet.