When a fly lands on your food most people think it just starts eating it but flies actually can’t chew like humans so instead they sort of puke up a special type of saliva right onto your meal this saliva contains digestive enzymes that break down your food into a
Slurp liquid the fly then uses its probos to suck it up like a smoothie which is how they consume your food
source
https://www.youtubepp.com/watch?v=ddN59V3wQbo