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 ...

But there’s probably a good reason you have that cough — and it can tell you a lot about what’s going on in your body.

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Despite the improvement, doctors said they planned to reinstate the ventilation mask during the ... in his lungs was a sign that he does not have the muscle tone to cough vigorously enough to ...

He resumed supplemental oxygen delivered by a nasal tube in the morning, alternating from a ventilation mask at night as doctors ... of secretions in his lungs was a sign that he doesn’t have the ...

forceful cough can still spread respiratory droplets, even if the viral load is lower and longer into the illness," Driscoll said. "So that's the only one little caveat." Should I wear a mask if I ...

They put him on a noninvasive mechanical ventilation mask to help him breathe ... secretions in his lungs was a sign that he doesn't have the muscle tone to cough vigorously enough to expel ...

They put him on a noninvasive mechanical ventilation mask to help him breathe and he slept ... The accumulation of secretions in his lungs was a sign that he doesn’t have the muscle tone to cough ...