Something Whiffy This Way Comes
oneirodynia asked about their persistent, shifty, Mystery House Smell, and answerers have offered an alarming number odorific tips, including sol's experiences with sewer or waste water/drain pipes and a great link to a related article (see the Metafilter post on Man Called Fran, the best article on forensic plumbing you ever likely to read), and samthemander's link to their own successful obnoxious odor outcome. Our noses await new news on this one!