What do the colors of the snot mean and how to recognize them?

The article about what the color of the snot means and how to recognize them. What do different nasal discharge colors mean? Is it dangerous or not?
The article about what the color of the snot means and how to recognize them. What do different nasal discharge colors mean? Is it dangerous or not?
Atelectasis occurs when the airways or the small sacs at their ends don't expand the way they should when people breathe, potentially causing a loss of gas exchange.