Warning: This is 3.0 Edition material. It is possible that there is more recent 3.5 Edition version.
Inaccurate?

Uncanny Scent

( Savage Species, p. 40)

[General]

You can pinpoint scents at a greater distance.

Prerequisite

Improved Scent (SS) , Scent ability,

Benefit

You can pinpoint the location of a scent when within 20 feet.

Normal

You can pinpoint the location of a scent when within 5 feet.