The distinctive smell of diarrhea, a persistent issue at Pueyrredón station for months, has spread across the entire D Line subway system in Buenos Aires between 8:45 PM and 11:45 PM on January 29, 2026, according to social media reports. Albin Stromber documented the development on X. Stromber stated on X at an unspecified time within the reporting window that "The smell of DIARRHEA that has been the distinctive mark of the Pueyrredón station for months has now spread to the entire D line," attributing the odor's expansion to the subway network during this 3-hour period. No official statements from subway authorities or city officials confirming the odor spread or its cause were reported in the sources during this window. The Pueyrredón station has experienced the diarrhea smell for months prior to this expansion, as noted by Stromber.
