| TOOTHACHE | Honk with laughter about helium (though it might need nitrous oxide) |
| BEDFELLOW | One to sleep with wolf, bleed though it might (9) |
| CHEMISTRY | What may be taught in school about helium? Master is to evaluate (9) |
| EPHEMERIS | Unusual premise about helium in astronomical almanac (9) |
| DEPARTURE | The leaving of trade, pure though it might be (9) |
| DEFAULTER | One failing to pay for flute, dear though it might have been (9) |
| CROSSWIND | Go over and turn it around, though it might make pilot's life difficult |
| MAHARAJAH | Laughter about open mic initially upset big shot (9) |
| AIRFILTER | Broadcast riddle, as it might need to be changed during annual maintenance (3,6) |
| INNERTUBE | Bearing in turbine broke down - it might need a pump to get going (5,4) |
| ONSLAUGHT | Son's laughter about attack (9) |
| SOURCREAM | Substantive shriek of laughter about our dairy product (4,5) |
| HITTHEGAS | "Hurry up!" to a nitrous oxide user? |
| SAGA | It's a gas - long and detailed though it might be (4) |
| RESTFUL | It gives one repose, though it might cause a fluster (7) |
| ORGY | It's hardly an exercise in moderation, though it might be good exercise |
| SURREAL | Close it tightly around curry, trimming the edges, though it might seem strange |
| SENOR | Sir, it's Spanish though it might have been Norse (5) |
| HOUSETOHOUSE | Laughter about need to employ such a search? |
| TOME | It might need two hands to be removed from a shelf |
