The flame is sealed inside a burner box.Zf you were driving ,and the flame
did not flame out,the box is sealed tight. If the flame blows out while
driving and you were using it just in the camp ground, you may have a
leaking box. If your box is sealed, the flame is safe. It is probably safe
even with a leaking burner box.

There is not much to burn back there. Dust, fallen fiberglass insulation,
wiring, and the sheath on the igniter cable.Thats about it.

Was it running on a/c? Any smell? Was teh fridge puttin out any cooling?