Stenches are unpleasant odors that can be encountered in different settings such as homes, offices, public places, or outdoor spaces. There are several synonyms that can be used to describe stenches based on their sources or characteristics. For instance, foul smells can be described as pungent, fetid, putrid, noxious, or rancid, while rotten odors may be referred to as decayed, decomposed, or spoiled. Other synonyms for stenches include malodorous, stinky, musty, moldy, stale, or smelly. These words can be used interchangeably in writing or speech, depending on the context and nuances of the situation. Ultimately, finding the right synonym requires considering the tone, purpose, and audience of the communication.