To dream of mosquitoes implies that you are being used and manipulated by others. They are exhausting you emotionally and mentally. It also means that you will use all of your efforts to defend yourself against their assaults.
To dream that you are killing mosquitoes indicates that you will be able to prevail over hardships to gain wealth and joy. .... Dream Symbols and Analysis
Mosquitoes attacking your body might arrive in a dream as a response to negative influences in your environment. They may point out that someone is feeding on your life force and leaving a swelling imtation.
A mosquito may appear to advise that you stop letting others suck your blood. (See Insect.)... Ariadne's Book of Dream
Symbol: Mosquitoes, flies, and snakes are representations of the devil.
Vision: If mosquitoes are buzzing about your head: you are too generous and others are taking advantage of you; also you might have a troublesome visitor. Getting bitten by a mosquito: the friends you selected turned out to be bad company. Things will get unpleasant, but your regrets are too late.
The people you invited will bring much stnfe into your house.
Depth Psychology: See Flies, Insects.... Dreamers Dictionary