Graveolence is a rare word that refers to a strong and unpleasant odor. If you are looking for synonyms to describe such a smell, you can use terms like pungency, fetor, stench, reek, malodor, malodorousness, putridity, noxiousness, foulness, or rankness. These words can be useful in describing any unpleasant smell that can come from different sources such as rotting food, garbage, or chemical irritants. It is essential to be aware of the proper use of these synonyms to avoid confusion or misunderstanding, as some words may have different connotations that may affect the overall message you want to convey.