Fly buzzing sound

[Lazy Joe]

I noticed fly buzzing sound at some areas where i have killed a lot of zeds.

Is that a warning to player that that is a location where you could get sick/sad if staying for too long?

Another thing is, I set the corpses to auto-remove after 1 ingame hour, so those location where i hear fly buzzing sound already don't have any corpses, just the blood stains. But the buzzing sounds persists.