Most mosquitoes are attracted too and tend to like people with the type O blood type for some unknown reason.
But what attracts the mosquito mostly and first of all is the carbon dioxide a person breathes and then the mosquito smells your type of blood and wants to suck it out of you since the mosquitoes thrive on a persons blood.
The second kind of blood the mosquitoes are most attracted too is the type B blood.
So if you have any of those types of blood then the mosquitoes will be attracted to you more than anyone else with other blood types.