Remove all open food in the area, clean the room(s) fully, perhaps spray some disenfectant to kill the attracting smells, and within a day or two all remaining fruit flies should be gone. Just keep the area clean and free of open food. Basically, the idea is if you remove the source of food required to allow them to thrive and live, then they should die off and go away.
Rid of gnats is gotten (without quotes):. Get Rid of Gnats.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.