The Death Stench Creeps is the 6th chapter of Gyo.
Back at the Koyanagi Lab, Tadashi gives the dead stench to Koyanagi to find out what it is. At Kaori's House, Kaori became crazy again because of the scent she smell.
At The Lab, Koyanagi discovered the walking stench. However, It sucks through Koyanagi's hand and cut his hands off.