Aura of Filth

Putrefying energy radiates in a 30-foot radius around you. Each creature in the aura, excluding yourself, has disadvantage on saving throws against poison and disease and on death saving throws. In addition, each creature in the aura can't be cured of a disease or poison, except by means of a heal or wish spell. 

Dying or decaying material within the aura, such as corpses, picked flowers, or food, rapidly putrefy, decaying an additional day for each round it is in the aura. The effect increases the amount of time a corpse has been dead, coundint against the time limit of spells such as raise dead.