Is being in close proximity to old human urine dangerous?

No, being in close proximity to old human urine is generally not dangerous. Urine is primarily composed of water and small amounts of various electrolytes, such as sodium, potassium, and chloride. While it may have an unpleasant odor, it does not pose a significant health risk. However, if the urine is contaminated with bacteria or other microorganisms, it may pose a health risk if ingested or if it comes into contact with open wounds.