Not to be confused with volume overload. Hypervolemia, or fluid overload, is the medical condition where there is too much fluid in the blood. The opposite condition is hypovolemia, which is too little fluid volume in the blood. Fluid volume excess in the intravascular compartment occurs due to an increase in total body sodium content and a consequent increase in extracellular body water.
The smell was put into natural Gas in the aftermath of a school explosion in New London Texas 1937. 300 students and faculty members lost their lives after the school exploded and was leveled when the trapped natural gas was ignited. The School was being fueled by gas directly from the near by oil wells.
Natural gas is odorless in its natural form. Before it arrives at your home, an odorant called mercaptan is added to it, so you can smell the gas immediately if a leak occurs. Mercaptan makes the gas smell like sulfur or rotten eggs. Everyone in your family should learn to recognize this smell.