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The CluePoisonous gas (6 letter answer)
NotesThe answer ARSINE is rarely seen, appearing only about once every 1600 puzzles.
Related CluesChemical weapon
Chemical warfare gas
Poisonous gas that smells like garlic
DefinitionARSINE as a noun:
1. a poisonous colorless flammable gas used in organic synthesis and to dope transistors and as a poison gas in warfare