There was a study in the American Journal of Epidemiology that showed dogs in smoking households had a 60 percent higher chance of lung cancer and another study showed long-nosed dogs like collies or greyhounds were twice as much at risk of developing nasal cancer if they lived with smokers
Furthermore, we stratified smoking behavior according to pack-years smoked
The cumulative use of cigarettes however showed that 52.4% have smoked in excess of 100 cigarettes and concerning smoking frequency, students who smoke at least daily gathers 37.2% compared to 62.8% of those who smoke less daily
All of these factors are clear bases on which tobacco use can be distinguished from other potentially hazardous activities, it said
And is the lung damage caused by smoking temporary or permanent
Gaithersburg, MD, USA: NIST Mitschke S, Adam T, Streibel T, Baker RR, Zimmermann R (2005) Application of time-of-flight mass spectrometry with laser-based photoionization methods for time-resolved on-line analysis of mainstream cigarette smoke
