At first, it was just fine just like any other normal person. Lately however, it became annoying to the point that I've experienced being hospitalized twice during trips due to those little insects' bites. Trip after trip, an essential that never leaves my handbag is my mosquito repellent. One day, I forgot my holy repellent - and then it was panic mode, paranoia, thinking mosquitoes are after me all day, every day.
That trip had taught me some tricks that would help anyone who suffers from the same 'fear' or 'allergy' of being bitten during their trip.
1- Don't wear any scented ANYTHING. Perfumes, hair mist, hair serum, lip palm. Nothing with a nice smell.
2- They say wear light colors - mosquitos and insects are attracted to dark colors, especially at night.
3- Eat and smell like garlic. (Really? Yes.)
4- There are some oils that have a scent that drives insects away, such as tea tree oil.
5- Vinegar is also a good option.
Having said that, and if you are going to destinations such as the Amazon or Madagascar where you could be exposed to dangerous bites/diseases, I would strongly advise you to take the vaccinations needed for prevention of danger. There are multiple health websites, mostly governmental, with announcements of the latest health news and updates, as well as the needed vaccinations.