'Noisomeness' definitions:

Definition of 'noisomeness'

noun

The quality of being noxious [syn: harmfulness, noisomeness, noxiousness]

From: GCIDE

Noisome \Noi"some\, a. [For noysome, fr. noy for annoy. See Annoy.]
1. Noxious to health; hurtful; mischievous; unwholesome; insalubrious; destructive; as, noisome effluvia. "Noisome pestilence." --Ps. xci. 3. [1913 Webster]
2. Offensive to the smell or other senses; disgusting; fetid. "Foul breath is noisome." --Shak. [1913 Webster] -- {Noi"some*ly}, adv. -- {Noi"some*ness}, n. [1913 Webster]
Syn: Noxious; unwholesome; insalubrious; mischievous; destructive.
Usage: Noisome, Noxious. These words have to a great extent been interchanged; but there is a tendency to make a distinction between them, applying noxious to things that inflict evil directly; as, a noxious plant, noxious practices, etc., and noisome to things that operate with a remoter influence; as, noisome vapors, a noisome pestilence, etc. Noisome has the additional sense of disqusting. A garden may be free from noxious weeds or animals; but, if recently covered with manure, it may be filled with a noisome smell. [1913 Webster]