fetor

This term describes a pungent, repulsive odor that evokes a visceral reaction of disgust. It is most frequently employed in medical or forensic contexts to describe the scent of gangrene, necrotic tissue, or advanced decomposition, carrying a clinical coldness that distinguishes it from more general words like stink or stench.

Because it refers to a specific quality of smell, it is treated as an uncountable mass noun. It does not typically take a plural form in standard usage, as the foulness is viewed as a singular, pervasive state rather than a collection of individual odors.