Noisome – a : offensive to the senses and especially to the sense of smell <noisome garbage>
b : highly obnoxious or objectionable <noisome habits
http://www.merriam-webster.com/dictionary/noisome
Used in “Beloved” on page 28, 2nd paragraph, at the bottom of the page.
Quiet, primate and completely secret except for the noisome cologne signal that thrilled the rabbits before it confused them.
I think that she was describing the perfume of her playroom and the unpleasant spelled it held but on that she attributed to the room. I found this sentence a bit confusing and how the word was to be applied.