Bacteria grow most rapidly in the range of temperatures between 40 °F and 140 °F, doubling in number in as little as 20 minutes. This range of temperatures is often called the "Danger Zone.
If your lymphatic system stopped working properly fluid would build in your tissues and cause swelling. You could get infections, blockage and even cancer. If your immune system stopped working properly too then you would most likely die. Since your lymphatic system is down and your immune system is down it would weaken your body tremendously meaning the smallest cold could cause death.
Lung diffusion is your ability to pass oxygen into the blood from the air sacs of the lungs, and pass carbon dioxide (CO2) back into the lungs from the blood.
Someone with Emphysema will usually be diagnosed with COPD ( Chronic obstructive pulmonary disease) This means their air sacs in there lungs are damaged and the inner walls of the the lungs are weakened and cause larger air spaces. This disease commonly causes bronchitis frequently, hard time breathing , lower immune system.