There is a song in the DT called SOME LITTLE BUG.

The Lester S. Levy Collection of Sheet Music gives this info (and somewhat different lyrics):

SOME LITTLE BUG IS GOING TO FIND YOU
Words by Benjamin Hapgood Burt and Roy Atwell.
Music by Silvio Hein.
Copyright 1915 by T. B. Harms and Francis, Day & Hunter, New York.

A complete transcription is in the thread called Songs about a hospital (for school program).