Phlegm comes in many colors and can be an important indicator of what is happening when someone produces it from their lungs or respiratory tract. Learn here about the different types of phlegm.
What to Know About Mucus
Mucus, Our Body's Silent Defender
Phlegm - Wikipedia
Is it allergies, COVID-19 or something else? What your mucus might mean
Phlegm Color Chart: What the Color of Your Phlegm Means
Sputum: Definition, colors, causes, and when to see a doctor
Pneumonia in adults - discharge Information
Timothy Phlegm Facebook, Instagram & Twitter on PeekYou
Color of Phlegm: What could it mean?
Don't judge your mucus by its color - Harvard Health
Bronchitis - acute Information
Snot Color Meaning: Yellow, Green, Brown and More
Is it allergies, COVID-19 or something else? What your mucus might mean
Phlegm: It's More Than Just Gobs Of Goo : Shots - Health News : NPR