What is it when you burn urine?

Urine is sterile, meaning it is free of microorganisms such as bacteria, fungi, and viruses. However, when urine is burned, the organic compounds present in it undergo combustion and release various gases and particles. These include water vapor, carbon dioxide, nitrogen oxides, sulfur oxides, and ammonia. The exact composition of the combustion products can vary depending on the specific composition of the urine sample.