That there is a specificity on one of the wings that at the same time be a bidder or medicine against bacteria that are on the other wing. Therefore, if a fly is immersed in the water of its whole body, then the bacteria present in it will die, and this is enough to thwart the fly's efforts in poisoning humans, as it has also been scientifically confirmed. That is, the flies produce a very small enzyme called Yofaj Bacteria, which is the body of a bacterium