To be absolutely brutal and honest with you, nobody cares about I look forward to hearing from you.. The practical reason is that it's one of the various standard and conventionally polite ways to end the body of the letter. It's just a standard exit.
1 In some cases, liver failure causes this taste to occur. 2  Gastroesophogal reflux disease can cause the salty taste (even when no pain is present). 3  Some medicines can make everything taste odd. for example the drug enalapril, which is a drug used to prevent heart failure.
Water Tastes Bad. Total dissolved solids (TDS) and the presence of metals such as iron, copper, manganese, or zinc can cause a metallic taste. Fluoride may also cause a distinct bad water taste. Chlorine and chloramines, used by water treatment plants, will often give water a strong musty or bleachy smell. Those who live near the ocean may encounter a salty taste, even when using municipal water.