| Clue | Source | Date |
|---|---|---|
| Research conducted by airport interfered with life-support mechanism (10) | ||
| A protective mask with a filter | ||
| Gas mask (10) | ||
| Iron lung, perhaps? (10) | ||
| Gas mask needing repairs – faulty rubbish returned | ||
| Porter airs problem to one of those immune to dust | Irish Times Crosaire | 10 Feb 2020 |
| Supplier of clean gas concerning new airports | The Telegraph Toughie | 19 Mar 2019 |
| Last of minor repairs to broken hospital equipment | ||
| Oriental enters airports under construction with the right gas mask | ||
| Short nap going to busy airport gives one a breather | Irish Times Crosaire | 23 Aug 2017 |
| Breathing aid | ||
| Biohazard protection | ||
| Gauze mask. |