The 10 Most Common Kidney Stone Signs and Symptoms

Pungent urine. Cloudiness and a very strong odor can sometimes occur with kidney stones. There are two main causes of this. When urine becomes more concentrated than usual, as when there is a blockage in the urinary tract that happens with kidney stones, the urine can give off a bitter odor. Stones can also cause infections of the kidneys or urinary tract. This can cause an odor of ammonia.