Stainless Steel and the passive layer Steel is an alloy of iron and carbon. Contrary to carbon steel, the presence of a minimum of 10.5 % chromium in the stainless steel gives it the property of corrosion resistance. Indeed, on contact with oxygen, a chromium oxide layer is formed on the surface of the material.
Sinus Drainage & Stomach Problems. One of the primary results of sinus congestion is drainage. Sinus drainage is expelled in two basic ways: through the nose and the back of the throat. When sinus drainage is expelled in back of the throat, it is referred to as postnasal drip and can cause stomach discomfort.
The mucus and fluid pass through holes in the sinuses and end up in the back of the throat and in the nose. Most of the time, we swallow the mucus and it is no problem. If, however, the sinus drainage becomes severe and chronic, it can build up or drain out of the nose or back down the throat and can become irritating. You can get an increase in sinus drainage by eating spicy foods or by taking in an irritating smell through your nose.