| Answer | Crossword Clue |
|---|---|
| ODOR | Something carbon monoxide lacks |
| ODOR | Carbon monoxide lacks it |
| ODOR | What carbon monoxide lacks |
| TOXIC | Like carbon monoxide |
| EMISSIONBELL | Carbon monoxide alarm? |
| AUTOS | Carbon monoxide creators |
| AUTOS | Carbon-monoxide creators |
| ODORLESS | Like carbon monoxide |
| AUTOS | They create carbon monoxide |
| ODOR | Carbon monoxide doesn't have it |
| ODOR | It's missing from carbon monoxide |
| ALARM | Sound from a carbon monoxide detector |
| EMISSION | Carbon monoxide from an engine, e.g. |
| AIR | "Hair" song with the lyric "Hello, carbon monoxide" |
