I know that (anecdotally) eating bananas is one way to turn yourself in to a mosquito magnet. The potassium in the bananas apparently attracts them to whomever eats them. Whenever I meet someone who says they always get eaten alive by mosquitoes I ask them if they eat a lot of bananas. The answer is usually yes.
What other foods attract mosquitoes to you? And what foods can you eat that will repel them instead?