Crossword clues for the word: POISONGAS The word POISONGAS has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for POISONGAS Showing 1 to 4 of 4 results Clue(s) Chemical warfare weapon Grace almost produces a song by one of The Killers hitting the airwaves I soon gasp fighting this? It's outlawed in warfare