No. 73: Jan-Feb 1991
"A scent squad has been unleashed in Bartlesville, Okla., to trace and identify an elusive odor that has plagued residents for months. The 19-member Bartlesville Odor Mitigation Task Force will distribute about a half dozen devices to trap the scent, which will then be snif fed and characterized by trained noses at a Chicago Research Company. The city has received 60 calls this year about the odor, described as smelling like rotten eggs or butane, but they have been unable to determine the source."
(Newman, Steve; "Malodorous Mystery," Baltimore Sun, July 22, 1990.)
Comment. We rarely come across olfactory anomalies, although they occasionally crop up in the Fortean literature.