bad smell from 89 k5?

Hey all
i have an 89 K5 with the 350 TBI; anyway; i pulled it in the garage today and smelled this awful odor. It's not oil, smelled like when you burn
popcorn or something; i thought it might be antifreeze, but i'm not overheating and there's no pools/drips underneath the truck. anyone know where it might be coming from? my dad thought it could be a water pump leaking and it could be slinging it onto the block. anyone got any ideas??
thanks for the help in advance TB

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