| Clue | Source | Date |
|---|---|---|
| Deadly gas found briefly in centre of Tacoma? (6,8) | ||
| Noxious thing kept inside by Scot symbolically? (6,8) | ||
| Mexico ban donor treated with poisonous gas (6,8) | ||
| Is cobalt a gas? (6,8) | ||
| Toxic gas swirling in mix once on B-road? | The Telegraph Toughie | 02 Jan 2019 |