Yoo Jae Suk isn't just an ordinary 'grasshopper': the nation's MC has surprised viewers with his keen sense of smell through this week's episode of 'Running Man'.

On the June 10th broadcast, the cast members of 'Running Man' battled each other in a 'zombies vs. humans' race on Muui Island. The race began as each members were given the mission to find a treasure, but little did they know that a zombie existed in the group.

The cast members were eventually split into two teams, zombies vs. humans. The zombies were given the mission to eliminate the humans by taking off their name tags, whereas the humans had to go around with water guns and squirt the name tags they suspected as zombies.

However, as human Yoo Jae Suk happened to get closer to zombie Song Ji Hyo, he remarked, "I smell the fragrance of Ji Hyo's perfume. The smell is really strong," causing Song Ji Hyo, who was secretly watching Yoo Jae Suk's every move, to become taken aback.

Viewers were given another round of laughter as the same thing happened again, but at a different location. Yoo Jae Suk, who was unaware of her actual presence, exclaimed, "I smell the fragrance again!"

Source: OSEN via Nate