From reading the YT comments... those worms did not come from inside his face. It's a traditional Malaysian(?) method of treating certain sinus ailments by rubbing cockroaches on the person's face, and the juices are supposed to have some curative effect. From what I read, it seems the worms actually come from inside the roach's stomach, and the little white blobs you see first are actually eggs from which the worms emerge. Third world charlatan hocus-pocus.

Where did you get the idea this was a result of eating tainted food?