Are E Cigarettes a Safe Alternative to Smoking? Using Airway Cell Cultures to Assess Early Indicators of COPD Progression Inquiries Journal Cigarette smoke induced lung inflammation in COPD mediated via CCR1 JAK STAT NF B pathway Figure f2 Aging Are E Cigarettes a Safe Alternative to Smoking? Using Airway Cell Cultures to Assess Early Indicators of COPD Progression Inquiries Journal The evidence is clear: Young E cigarette users suffer from respiratory symptoms American Lung Association Marijuana and Your Lungs: Is Vaping Safe for People with COPD?