Flight is the 5th chapter of Gyo.
At Tokyo, Tadashi enter Koyanagi's Lab. Later, Tadashi went back to Kaori. However, Kaori smelled the scent of the death stench again. She became crazy and running from the streets and following the scent. Tadashi and Kaori saw a plastic bag. It was the death stench who was inside the plastic bag. The Plastic Bag chased them until it pop. It was a death stench fish. Who's gills are removed and only a bones left.