Synonyms for "most odiferous" include "most fragrant", "most pungent", "most smelly", "most aromatic", "most redolent", "most perfumed", "most scented", "most potent", "most malodorous", "most fetid", "most putrid", "most rank", "most rancid", "most stale", and "most musty". These words can describe both pleasant and unpleasant scents, highlighting the importance of context in communication. Using varied synonyms in writing and speech helps avoid repetition and adds interest to descriptions of smells.