| Answer | Crossword Clue |
|---|---|
| SARIN | Deadly nerve gas |
| tetrodotoxin | a deadly nerve poison found in a species of Japanese puffer fish also TETROTOXIN |
| tetrotoxin | a deadly nerve poison found in a species of Japanese puffer fish also TETRODOTOXIN |
| tetrotoxins | TETROTOXIN, a deadly nerve poison found in a species of Japanese puffer fish also TETRODOTOXIN |
| tetrodotoxins | TETRODOTOXIN, a deadly nerve poison found in a species of Japanese puffer fish also TETROTOXIN |
| RADON | Deadly gas |
| BHOPAL | Indian city that was the site of a deadly gas leak in 1984 |
