Not any more - I used to but when I went to live in a badly infested mosquito area, I took Vitamin B tablets and in the 8 years that I lived there, I did not once get bitten by a mosquito!
However I have since read that it does nothing, however it seemed to have worked for me as my partner got Ross River Virus fairly early in the move. (nasty disease).
So, NO I am not one of those who gets bitten easily.