when you smoke what is your lungs doing?
The lungs filter out the bad chemicals in smoking

Smoking damages blood vessels and can make them get thick and narrow. This makes your heart rate beat faster, and your blood pressure goes up.

what is the main malfunctions of your lungs?
pumps oxygen to around your body, filters out dust
what colour is a healthy lung and a unhealthy lung? A healthy lungs colour is bright pink or white and the unhealthy lung is kind of black

Link to Effects of Tobacco on Hauora