In fact, there are indeed people who are more attractive to be used as food for mosquitoes. It mainly deals with the components and aromas that are removed from one's body. However, one of the main reasons why a person is more vulnerable to being bitten by a mosquito is 85% by genetic factors. Other factors include physical activity, perspiration, personal hygiene, even pregnancy, all of which can affect how susceptible you are to being bitten by mosquitoes.