Analyze the insects
They are actually quite calming. They float in the air, almost letting themselves fall just to rise up again. They don't seem to have a lot of control of where they're going. You can see their insides, a small transparent blob that shakes as they move around, almost looking like the organelles of a cell.
They emit a faint glow. Sometimes, they emit a sound, but it's a high pitched beep, entirely unlike the hum that you're hearing right now.