It may be worth taking your own mosquito net as a preventative measure, although you may not always find somewhere to hang it. If your child wakes up a lot in the night, you may find it hard to remember, in your befuddled state, to make sure the net is closed properly when you fall back into bed. Of course this is not so much a problem if you are sleeping under the net with your child. When we come back the smell, and hopefully any residue, has dispersed and any mosquitoes area dead. I always burn a coil in the bathroom overnight, unless it is well sealed, as mosquitoes congregate where it is damp.
Vaporizers are only useful where there is electric power.
These small, portable gadgets vaporize insecticide tablets. They don't produce smells or smoke but the insecticide is still released into the air. If you buy one before you leave home check that it uses the appropriate voltage and you have the right adapter. It's a good idea to carry some preparation which will take the itch or sting out of insect bites. There are some good preparations and antihistamine creams which work well.