Bloodhound

Transmutation
Level: Alchemist* 3, Hunter * 2, Inquisitor * 2, Ranger * 2
Components: V, S, M (a drop of blood and a pinch of cinnamon)
Casting Time: 1 Standard Action
Range: personal
Target: you
Duration: 1 hour/level
Saving Throw: -
Spell Resistance: -
  You gain the Scent special quality, including the ability to track by Scent. You receive a +8 Competence Bonus on Perception checks involving smell and a +4 Competence Bonus on Survival checks to track using Scent. You take a -4 penalty on saving throws against odor-related effects such as the stench ability and stinking cloud. A creature under the effects of bloodhound can detect poison by Scent with a DC 20 Perception check.