cigarette smoke reduces atp lung epithelial cells Tobacco Induces and Alters Immune Responses in the Triggering Inflammation, Allergy, Asthma and Other Lung Diseases: A Mechanistic Review Cigarette smoke exposure and alveolar
Description
Their combination might increase the risk of heart-related issues

These infections can also be caused by not flossing and brushing teeth regularly
The devices themselves do vary somewhat from brand to brand though some parts are interchangeable

Keeping them in their original box or soft pack adds an extra layer of protection

Also, the price was very reasonable
