I Was Heating Up Some Left Overs In The Oven,

I was heating up some left overs in the oven, and when I took it out, I noticed I left a plastic knife on the foil. I immediately tore off the piece of foil that the knife was melted on and threw away what ever good it touched. Is it safe to consume the food it didn't touch? (My food wasn't covered while in the oven)