what does it mean if you have s sinus drainage with metallic taste
1 Nasal and Sinus Congestion-If you find it hard to breathe through your nose or if you breath through your mouth, then you will find that excess mucus is causing your nasal congestion. 2  Bad Taste or Sour, Biter Metallic Taste in the Mouth-This means you are tasting sulphur compounds.