Simply Su-Jok: Coughing up blood? Here are some tips that can help cure the problem Blood in sputum or mucus while coughing can be worrying at times. Fortunately, there are ways in which one can manage the condition with simple self-healing techniques, foods and essential oils Inflammation and a buildup of mucus in the chest can cause unpleasant symptoms like wheezing, sleep difficulties and a sore throat. Congestion is also often accompanied by a cough that brings up phlegm. It is a scary affair in these Covid times as throat infection with dry cough is considered a sign of lung infection. But scarier if one spits out blood with the mucus, especially in old age.