The pungent smell which one encounters near a decaying heap of organic matter or a toilet is due to ________.
Ammonia
The pungent smell which one encounters near a decaying heap of organic matter or a toilet is due to ammonia. Ammonia is a compound of nitrogen and hydrogen with the formula NH3. It is a colourless gas with a characteristic pungent smell. Ammonia contributes significantly to the nutritional needs of terrestrial organisms by serving as a precursor to food and fertilizers. Ammonia, either directly or indirectly, is also a building block for the synthesis of many pharmaceuticals or is used in many commercial cleaning products. Although common in nature and in wide use, ammonia is both caustic and hazardous in its concentrated form.