S.O. and I got into an argument over a hypothetical scenario was I wrong?

He asked today if in a scenario he was being held hostage and had poop all over his hands and the kidnapper says that if I don't touch my s.o.'s poop covered hands that he'll die if I would do it. My response was "If I have to". Which he turned into this whole argument about me not blindingly touching his hands to save him. I told him my response meant if there was another way to save him without touching poop why not do it right? And if there's no other way then touch the poop. Is he right?