👉 The "barcelona:fumes" phenomenon refers to a series of mysterious and often distressing odors that have been reported in various parts of Barcelona, particularly around industrial zones and construction sites. These fumes are typically described as a mix of sulfurous, metallic, and chemical smells, which can be overwhelming and unpleasant. The source of these odors is often linked to industrial activities, such as the burning of fossil fuels, chemical manufacturing, and waste incineration. Despite efforts by local authorities to identify and mitigate the sources, the fumes persist, affecting residents and visitors alike, and contributing to a sense of environmental degradation in the city.