Quite interesting. Argies got 4 missile hits.
HMS Sheffield - warhead failed to explode. But the rocket motor ignited the missile magazine. Destroyer was sunk.
HMS Glamorgan was hit on the last day by a make shift truck launched Exocet. Again the warhead failed to explode and the destroyer survived.
Transport Atlantic Conveyor was mistaken for either HMS Hermes or Illustrious and got hit by 2 missiles. There are conflicting reports whether the warheads exploded or the missiles caused fire that ignited fuel bunkers. Ship sank.
So potentially none of the warheads exploded.
Iraqis fired to Exocets at USS Stark, one of them failed to detonate as well.
So 5 Exocets fired in anger with only one detonating.
I remember my dad was invited to a live fire exercise by Pak Navy during one of the Sea Spark Ex. An Exocet was launched by an Atlantique and the warhead failed to explode. One of the old gearing class destroyer moved in the finish the target off with its 5 inch guns. Navy folks were quite embarrassed