Clark County Residents Encounter Mysterious Stink, Agencies Investigate

On a Tuesday night, residents in Clark County reported a mysterious and unpleasant odor that prompted a response from multiple agencies, including the Clark Regional Emergency Services Agency (CRESA). The smell, which affected areas from I-5 MP 36 south to the Clark County border, led to numerous 911 calls, with some individuals experiencing eye and throat irritation, as well as headaches. Witnesses described the odor variably as resembling natural gas, raw sewage, or rotting meat. The Cowlitz County Department of Emergency Management (DEM) noted that the odor had dissipated in some areas but appeared to be moving southward, potentially affecting the Portland metro area. Despite the widespread reports, officials were unable to confirm whether the smell posed any health risks. Cowlitz County Fire District 5 conducted air quality monitoring in Kalama, which indicated normal oxygen levels and no presence of harmful gases. Investigations ruled out potential sources such as local industrial facilities, pipelines, and transportation issues, with companies like Nippon and Weyerhaeuser reporting no operational problems. The State Department of Ecology also found no evidence of any releases that could explain the odor. Agencies continued to collaborate with experts to identify the source of the smell, emphasizing the importance of public safety. Residents were advised to close doors and windows and turn off outdoor air sources if they encountered the odor. Those experiencing adverse health effects were encouraged to contact emergency services. The situation remains under investigation as authorities seek to determine the cause of this unusual event.