• Synonyms: noxious
  Meaning: injurious to physical or mental health; "noxious chemical wastes"; "noxious ideas"

• "That I killed a vile noxious insect, an old pawnbroker woman, of use to no one!...
• Thus the atmosphere became a deadly poison to the next poor victim who was left to breathe the noxious effluvia of corruption and decay.
• It is believed that Mont Pelee threw off a great gasp of some exceedingly heavy and noxious gas, something akin to firedamp, which settled upon the city and rendered the inhabitants insensible.
• I had been considerably startled when the lights burnt first green and then red; but had been momentarily under the impression that the change was due to some influx of noxious gas into the room.

0. Word pronunciation is derived from article recording Seawater, License CC BY-SA 4.0