Remove Scent

With a touch of a wax-covered finger to the subject, you inhale deeply and smell nothing.

(Spell Compendium, p. 173)  
Originally posted on D&D tools

Transmutation

Level: Bard 1, Druid 1, Ranger 1, Sorcerer, Wizard 1,
Components: V, S, M,
Casting Time: 1 standard action
Range: Touch
Target: Creature touched
Duration: 10 minutes/level
Saving Throw: Will negates
Spell Resistance: Yes

This spells hides the scent of the creature or object touched for the duration of the spell. The Scent ability cannot detect a creature under the effect of a remove scent spell. It also negates the harmful effects of the noxious stench exuded by certain creatures, such as ghasts, for the duration of the spell.

Material Component: A pinch of unscented candle wax.