I haven't read all the posts here, but I like the idea of Mosquito Net Pyjamas. Unfortunately they would have to look like a baby's jump suit. After all, ankles, wrists, neck etc would all have to be covered. My experience of mosquito bites are generally around those areas - especially ankles and elbows. And in a very hot climate it could be quite suffocating. Still - an interesting thought!
Apart from the obvious like insect repellent (applied - not imbibed), Marmite is an excellent defence. I kid you not! Them mozzies either love it or hate it, and more often than not it works.
Just make sure you have a supply. (You're supposed to eat it by the way, not spread it thinly on external areas!) Failing that, vinegar is very effective, although the smell may not be agreeable. Best to get drunk first, and then get truly pickled!
Also, remember that mosquitoes in the tropics, over 400ft above sea level do not carry malaria, so in essence, they're no worse than suffering midge bites in the highlands of Scotland - and a lot less annoying. Itch is bad - true, but again, just apply some vinegar and you'll be fine. You may not be very popular, but you'll have to weigh that up with the pros and cons