Superior Jacobson Organ

Superior Jacobson Organ (Major) by Iczer

'Oh oh....I know what you two have been up to...'

The character has an enhanced Jacobson organ, supplying him with not only an enhanced sense of smell (Identical to the minor power: heightened sense of smell) but also a superior Vomernolnasal sense. The Vomernolnasal Organ (VNO) is an auxiliary organ not normally found in human beings, and is keyed specifically to sense pheremonal scents.
The character has a 'sex' sense in short. Able to sense when a target is in heat, or is aroused. The character's brain is capable of extrapolating this data more effectively as well, and the character can tell the source of a target's arousal (or cause).
It's not all about sex though. The character can also detect fear in a target (as well as the source) as well as anger and adrenaline. For up to thirty minutes afterwards, the character can sense the general activities associated with these scents. The character can tell from a person's sweat whether he has been fighting, exercising, or other types of activities.
Then character is an excellent matchmaker, able to sense whether two people are attracted to each other.

Other abilities: Treat human smells as 'common' odors (Pg 234 HU2). +20% to track people and recognize people by scent alone. +2 MA. +2IQ.