Poisonous Fumes Used in Biological Warfare
Puzzle 13 of Emergency Workers Easy Pack
Question is: Poisonous Fumes Used in Biological Warfare
and the answer is: NERVEGAS
Word Meaning:
NERVE GAS — A toxic chemical compound and banned weapon of mass destruction which, when inhaled or ingested, impairs nervous system functions, typically causing extreme physical distress and death by asphyxiation.
Definitions from Wiktionary.