Shocking footage shows the tar-blackened lungs of a chain smoker who was hooked to the killer habit for 30 years. Instead of being a healthy pink, they were charcoal in colour and extremely inflamed from decades of tobacco residue clogging them up.

Doctors from the Wuxi People’s Hospital in Jiangsu, China, extracted the organs after the 52-year-old man, who had multiple lung diseases, died. The video, recorded by the surgeons, has been viewed more than 25million times on social media, with users dubbing it the ‘best anti-smoking ad ever’. It was uploaded by the hospital with the caption: ‘Do you still have the courage to smoke?’