Sneeze of the Octo-Schnozz : a Branches Book

Everything stinks! Alexander, Rip, and Nikki aren't in the same class anymore. The monster notebook is missing. And a HONKing monster is sliming Stermont! Plus, actual smelly stuff is going missing all over town. Could all of these stinky things be connected? The S.S.M.P. will have to sniff out their latest monster!