| Answer | Crossword Clue |
|---|---|
| FLUORINE | Poisonous yellow gas |
| HENBANE | Yellow-flowered poisonous herb |
| RADON | Poisonous gas |
| ARSINE | Poisonous gas |
| ARSINE | Poisonous gas. |
| ARSINE | Garlicky poisonous gas |
| KETENE | Colorless, poisonous gas |
| ARSINE | Poisonous gas with garlic odor. |
| ARSINE | Poisonous gas that smells like garlic |
