You can protect from dengue mosquito by using insects repellents but these repellents are like slow poison.
Mosquito repellents are very harmful to bodies either cream or any type of repellents. Cream causes skin cancer if you are using for a long time.
Some repellents are available in smoke form. It uses liquid and solid coils. Smoke created from these repellents contents carbon mono oxide and poison.
These smoke easily kill mosquito but not us, but it is very dangerous for lungs and causes many diseases.
So I would like to advise you go with herbal products or best use mosquito net.