A lot of people think of lungs as if they are big bags, but in reality they are more like a sponge. So if you could imagine what the accumulation would be like

A lot of people think of lungs as if they are big bags, but in reality they are more like a sponge. So if you could imagine what the accumulation would be like in a kitchen sponge, that is kind of what it is like in the lungs.