Jessica Simpson revealed at a concert on August 27, 2008 that she "does pass gas a lot" and that she "guarantees it smells like roses." Her confession was in between songs at the Avalon Ballroom in Niagara Falls. In addition to discussing her flatulence, she also talked about ex-husband Nick Lachey.http://www.foxnews.com/story/0,2933,413541,00.html