Good Sense of Smell

When compared to some species, humans have a sense of smell so weak to barely warrant mentioning. You however, are able to pick up the fragrances and musk that most of Alwaus passes by without consideration. You may upgrade the ability of any Survival, Perception, and Vigilance checks made with significant olfactory factors. 
Note: The upgraded ability dice is not intended to be used for Vigilance checks used to track initiative during structured encounters.