Mosquito Bites and Insect Bites are proved Dangerous for Humans, These Bites causes diseases like Malaria and Dengue. Most of the mosquitoes carry diceases from one place to another. Not only Mosquitoes but other Insects and Bugs also causes allergies and Diseases.
It is better to prevent mosquito bites in the first place. Keeping the home surroundings Clean, Removing Waste water around home, Using Repellants will help to some extent.
In addition to that you can Cover Doors and Windows with Nets, These nets will allow ample of Air flow in to the home along with light keeping Insects, Bugs and Mosquitoes out. These Doors and windows are not Costlier when compared to the medicines used for allergies.