Here’s a pair of lungs from a 52 year-old smoker who died of the effects of his habit —
https://i0.wp.com/metro.co.uk/wp-con...44%2C338&ssl=1
https://metro.co.uk/2019/11/20/grim-...ears-11185587/
Contrast with normal lungs —
https://i0.wp.com/metro.co.uk/wp-con...40%2C535&ssl=1