Bholu had to use public toilet once. He exclaimed “Yuck...Smells awful! Isn’t it?” He wondered what’s the component of urine that makes it smell so disgusting?
Urea
Human urine contains 95% water, 2.5% urea and 2.5% other substances. Aquatic animals excrete ammonia directly into the water bodies. Birds, lizards and snakes excrete a white semi solid liquid which is highly rich in uric acid.