Noxious or harmful. Offensive to the senses, especially to the sense of smell. I had read this word many times and, because it resembles the word “noise,” have always had trouble remembering that it doesn’t just mean “noisy.” It is similar also, of course, to “annoying,” which will be my new mnemonic.
The Lord of the Rings, page 613.
There was a faint hiss, a noisome smell went up, the lights flickered and danced and swirled.