"More odiferous" is a phrase used to describe something that has a strong and unpleasant smell. There are many synonyms for this phrase, such as "more pungent," "more noxious," "more fetid," "more malodorous," and "more rank." These words all convey a sense of something that is highly fragrant, but not in a good way. Other possible synonyms include "more foul-smelling," "more acrid," "more putrid," "more offensive," and "more repugnant." All of these words are used to describe something with a strong odor that is unpleasant and possibly even nauseating.