Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy Is vaping an alternative to smoking for COPD patients? VitalAire Canada Question: How do the ingredients in e cigarettes and vaporizers affect respiratory health? Los Angeles ENT Doctors ENT Specialists Top Surgeons Study discovers new way vaping could impact your body as warning is issued Bar chart representing COPD GOLD stage changes over the study period. Download Scientific Diagram