Horrible Taste

Drawing upon the talents of some creatures of the insect world, you change your flesh to make it unpalatable to other creatures.

(Champions of Valor)
Originally posted on D&D tools  

Transmutation

Level: Druid 1, Ranger 1
Components: V, S,
Casting Time: 1 immediate action
Range: Personal
Target: You
Duration: 1 turn/level

• Any creature that hits you with a bite attack becomes nauseated until the end of your next turn unless it succeeds on a Fortitude save.
• Creatures immune to poison are unaffected by this spell.