Jeremy Clarkson quits 40-a-day smoking habit after pneumonia scare in Mallorca The Grand Tour presenter says he has “quite literally defied medical science”. Doctors were surprised about how well he battled back from pneumonia. He said: “I’ve smoked nearly 630,000 fags over the past 43 years and, aside from the very first, there hasn’t been a single one that I didn’t enjoy. QUITTING: Clarkson has quit his 40-a-day smoking habit after pneumonia scare. “But then, as you may have heard, I got pneumonia while I was on holiday, and I was told, by everyone, that I had to stop. Clarkson was on a family break in Mallorca, Spain. He added: “I had to run up some stairs, and afterwards the doctor was horrified. “I had 96% of the lung capacity you would expect in someone my age. HEALTHY: ‘I’ve smoked nearly 630,000 fags over the past 43 years’ says Clarkson. MEDICAL MIRACLE: I have quite literally defied medical science says Clarkson. “Plus, my blood was more oxygenated than it had been when I was sitting in a chair. “Which is impossible, apparently. In short, getting on for three-quarters of a million fags have not harmed me in any way. I have quite literally defied medical science.”.