[dcwusmc]

We can presume that the flies flew into the desert because they caught the scent of rotting flesh. Just as the animal scavengers did. Nothing unusual here. Critters do seem to have a pretty well developed sense of smell, far more sensitive than humans because they need to get to prey before the next critter does. That's not so hard to fathom... like blood in the water attracts sharks from MANY miles away.

[VRWC_minion]

We can presume that the flies flew into the desert because they caught the scent of rotting flesh.

How far does the smell go ? If the flies are not in range how would they smell it ?