Genetics may be the answer
If you are one of those unlucky people who mosquitoes seem to prefer, you're not alone. Scientists have been puzzling over this anecdotal problem for years, but one team recently put together an interesting study that sheds new light on the question.
Researchers at the London School of Hygiene & Tropical Medicine gathered two sets of female twins: one group of identical twins, and one group of fraternal twins. They then trapped the most common species of mosquito into a tube with two openings. The researchers placed the tube openings on each twin, and released the mosquitoes.
When it came to identical twins, the mosquitoes didn't show a preference. But when it came to fraternal twins, the mosquitoes showed a clear preference, gravitating towards one twin over the other.
This is a strong indication that mosquito preference is somehow governed by genetics. Although the specific mechanisms are not yet known. Interesting stuff, and maybe someday it will help us create the perfect mosquito repellent!