How do they work? Are they like odors? And please provide sources. --[[User:Ed Poor|Ed Poor]] <sup>[[User talk:Ed Poor|Talk]]</sup> 18:42, 23 August 2008 (EDT) | How do they work? Are they like odors? And please provide sources. --[[User:Ed Poor|Ed Poor]] <sup>[[User talk:Ed Poor|Talk]]</sup> 18:42, 23 August 2008 (EDT) |