Americans are weathering the worst flu season in years, as a number of other respiratory illnesses circulate too, such as COVID-19, RSV and the common cold. A telltale sign you’re getting sick is ...

Black mucus is rare. It can be the sign of a fungal infection, or exposure to pollutants such as coal, dust or cigarette ...

Yellow snot is gross, but does it mean you have an infection? Here's everything you need to know about it. Snot, mucus, phlegm ... whatever you call it, it's kind of a mess. There's enough dread ...

Thick, crystal-clear yellow slime is slowly poked and pressed, releasing soft, glossy ripples and satisfying air bubbles with ...