What are white worm like things inside fly?
Answers:
they are maggots--baby flies. The fly you killed was about to lay it's eggs/maggots on something. Drown 'em in Windex or something.
Other answers:
maggotts
maggotts
They are maggots, or fly larve. The flies lay their eggs in dead things and then the maggots hatch into flies. They should die after you killed the fly, as long as you squashed them well!