This stone reeks of rotting meat.

A stench stone nauseates its target and sickens those nearby. The stone must be thrown (range increment 10 feet) or hurled from a sling (using that weapon’s normal range increment) as a ranged attack. If the stone strikes its target, it deals no damage but bursts into a cloud of noxious vapor. If a stench stone misses its target, it is consumed without effect.
Any living creature struck by a stench stone becomes nauseated for 1 round (Fort DC 13 negates). Regardless of the success or failure of the save, the target exudes a stench for 3 rounds that causes all creatures within 10 feet of it to be sickened for the remaining duration of the stench (Fort DC 13 negates). Creatures immune to poison are unaffected by stench stones; any effect that neutralizes or delays poison also protects against the effect.
Once activated, this item is expendedand cannot be used again.

Prerequisites: Craft Wondrous Item, ghoul touch.
Cost to Create: 150 gp, 12 XP, 1 day.