Stink Spirit

A Stink Spirit is, apparently, a spirit so disgusting that it appears as a smelly mass of sludge or ooze. One such Stink Spirit appeared in Spirited Away.

However, the Stink Spirit that appeared was actually just a River Spirit that had been too polluted by garbage that needed to be removed. His smell is unbearable. Even food becomes bad, when he passed by without touching it.

Trivia

 * It appears that regular spirits become Stink Spirits when heavily contaminated by garbage and pollutants.

千と千尋の神隠し Faulgott