Well, truth is that some people have a certain scent or something that is more attractive to the rascals. There is truth that some people are more inviting than others. I have read some things but probably the best is one of the Deet type products.
Fragrances can be attractive too - no deoderants, scented shampoos, or perfumes, lotions, etc.
I have used cigar smoke to repel mosquitoes in south Texas large enough to call in for landing instructions.
Deet does work great. It’s basically a nerve agent (get some on your tongue and you’ll see what I mean).
But it’s not natural, as far as I know.