I've already mentioned the obvious choices for further reading ([[Sensible Hare and the Case of Carrots by Daren King]] in particular). There are other great choices in [[Top Ten Books For Children Who Think That Farts Are Funny]]. Whilst there aren't direct comparisons in terms of plot, [[Pinocchio by Carlo Collodi and Sara Fanelli]] has a similar sort of spirit to ''Doctor Proctor's Fart Powder''.