AMMONIA

Pungent gas (7)

Solution has appeared in 3 crosswords (1 across and 2 down):

• Quick crossword No 15,979 — 2021-07-23 23:00:07
  2D: <span>Colourless, acrid-smelling gas, NH</span>₃ (7)
• Quick crossword No 15,659 — 2020-07-14 23:00:28
  19A: <span>Acrid gas, NH</span>₃ (7)
• Quick crossword No 15,241 — 2019-03-14 00:00:24
  13D: Pungent gas (7)