If your mucus is gray or black... …you likely inhaled dark-colored particles, like smoke from a fire or heavy exhaust. Regular smokers can also blow out darker mucus because of the tar or other toxic ...

This cold and flu season, you may be looking for clues you're getting better anywhere you can find them, even in the color of your snot.

When a person has black or dark-colored mucus, they may have inhaled potentially harmful pollutants. Coughing up black mucus may also be due to an underlying infection or condition. Mucus serves ...

Discover 7 natural remedies to relieve chest congestion, improve breathing, and soothe respiratory discomfort without relying ...

ROME and LONDON -- Pope Francis suffered two episodes of "acute respiratory failure" on Monday, the Vatican said. The ...

In a phase 4 trial, dupilumab effectively reduces airway inflammation and mucus plugging, improving lung function and asthma control in patients with moderate to severe type 2 asthma.