Sandra, you mentioned 1 b complex daily. I assume you mean a vitamin or supplement?
My wife attracts the mosquitos, she always gets several bites when she visits the island, I rarely get bitten. At the last trip I visited Loiza without her but with another Puerto Rican family member, the mosquitos in Loiza went after my legs and I wound up with several bites in my legs, my family member with me did not get a single bite and we were sitting together at the same table.
It seems some of us smell more delicious than others, maybe the B vitamins do the trick, LOL.
Here is an article in WebMD about that:
Besides people mosquitos also like sugary stuff, see this article: