Dog's Nose Technique

Inuhana no Jutsu (Dog's Nose Technique)
Chakra Control (Body)
Rank: 1 (C-Class);
Range: Personal;
Target: You;
Duration: 1 minute/2 extra chakra;
Saving Throws: None;
Chakra Cost: 4.

An uncommon technique among genin that is actually a weaker variant of the much rarer Hakken no Jutsu. The user amplifies his nose by a good amount, thus aiding in detection, but this ability is by no mean perfect and consumes a large amount of Chakra. This special quality allows the user to detect approaching enemies, but not sniff out hidden foes or track by sense of smell. Creatures with the scent ability can identify familiar odors just as humans do familiar sights. The user can detect opponents within 10 feet by sense of smell. If the opponent is upwind, the range increases to 20 feet; if downwind, detection is impossible.

Strong scents, such as smoke or rotting garbage, can be detected at twice the ranges noted above (10 feet downwind). Overpowering scents, such as skunk musk, can be detected at triple normal range (15 feet downwind). When a scent is detected, the exact location of the source is not revealed—only its presence somewhere within range. The user can move to note the direction of the scent. Whenever the user comes within 5 feet of the source, the creature can pinpoint the source’s location by making a Int check (DC 20).