Thomas Crapper's Handbell

Origins
Excerpt from Wikiedia:

Thomas Crapper was a plumber who founded Thomas Crapper & Co in London. Contrary to widespread misconceptions, Crapper did not invent the flush toilet. He did, however, do much to increase the popularity of the toilet, and developed some important related inventions, such as the ballcock. He was noted for the quality of his products and received several royal warrants.

Effects
When rung, it releases a "brown-note" for all who hear it except the ringer causing them to lose control over their bowels.