Nextdoor's patio doors open onto our back garden and our patio doors are near theirs.
She seems to have a penchant for air fresheners because when she opens her patio doors the smell foul stench comes out and we can smell it in our garden. I think she smokes too and the smell is all mixed up. I could cope with the smoke, but mixed with air freshener, it's just too much and it makes me feel sick 
The air freshener smell is overwhelming.
I want fresh air in my back garden, not this chemical reek.
There's absolutely nothing I can do about it, as she has the right to do this in her own home, so I don't think there's a solution other than for me to remain indoors.