| noxious fume | 4.48 | Many household products give off noxious fumes. | ||
| noxious gas | 2.30 | A noxious gas was discovered to be leaking from the pipe. | ||
| noxious weed | 1.12 | Multiflora rose is now classified as a noxious weed in several states. | ||
| noxious odor | 0.92 | Noxious odor spread from the area, witnesses said. | ||
| noxious chemical | 0.79 | Heavy industry pollutes our rivers with noxious chemicals. | ||
| noxious substance | 0.72 | But smoke is not the only noxious substance that travels through air vents. | ||
| noxious emission | 0.53 | Will no-name gas make your engine knock and your tailpipe spew more noxious emissions? | ||
| noxious smoke | 0.46 | Incas burned them to create noxious smoke as protection against invaders. | ||
| noxious cloud | 0.39 | It will not precede you into a room like a noxious cloud. | ||
| noxious agent | 0.33 | The poison control center found no evidence that a noxious agent had been released in London that night. | ||
| noxious haze | 0.26 | All kinds of vehicles pump pollutants that cover the city in a noxious haze. | ||
| noxious smell | 0.26 | A noxious smell, similar to rotten eggs, pervades several residential streets on a hill north of the complex. |