Max: Initiative Bonus
Test: Perception (Sense)

One of your primary five senses is highly developed, allowing you to spot what others miss. You may take Perception Tests to detect normally imperceptible details with the associated sense, as dictated by the GM. This could include: seeing an eagle beyond everyone else’s eyeshot, smelling an almost odourless poison, hearing the breath of an unmoving mouse within a wall, feeling a worn away letter in a carving, or tasting that two beers from the same brewer have been drawn from two different barrels.

Core Book, Page 132