- Fair 28, for 2.5 - 10 micrometers
This can cause chronic obstructive pulmonary disease (COPD), a group of lung diseases that block airflow and make it difficult for you to breathe
First, smoking-related structural changes in the respiratory system, such as airway inflammation, fibrosis, and decreased mucociliary clearance, make it easier for pathogens, including hepatitis viruses, to invade and colonize the body
"When you cut one open you'll notice there isn't tobacco inside, it looks more like herb - not that 'erb - but you know, rose petal, clover and tea leaves." In the clip, David reveals just how realistic the cigarettes are, showing a box of Honeyrose London, which looks just like real ciggies
on cigarette packets