WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
a distinctive odor that is offensively unpleasant
Word Usage
"By the age of 5, his talent for sniffing out every kind of malodor is already evident, but nothing prepares him for what he encounters after being sold as an apprentice to a tannery run by a vicious brute replete with boils."