The World Health Organization (WHO) has warned that toxic “black rain” falling in Iran

The World Health Organization (WHO) has warned that toxic “black rain” falling in Iran — linked to recent strikes on major oil facilities and refineries — poses serious health risks, especially to the respiratory system. The black rain contains oil residues and acidic pollutants from fires and airborne toxic compounds. WHO has backed local health advice urging people to stay indoors and avoid exposure, as breathing polluted air or contacting contaminated rainwater can cause headaches, eye/skin irritation, breathing difficulties, and longer‑term risks