What does spit smell like?

The smell of spit can vary greatly depending on the person and their oral hygiene habits. In general, spit smells slightly salty and metallic, due to the presence of dissolved minerals and electrolytes. Poor oral hygiene can lead to a more pronounced odor, due to the growth of bacteria and the breakdown of food particles in the mouth. In some cases, spit may have a sweet or sour odor, which can indicate the presence of certain medical conditions.