The screening visit will take 1-2 hours. If eligible, participation in this study involves the following:
Study visit 1 (2-3 hours):
- Questions about demographics, mental health, tobacco, and drug use
- Breath alcohol, urine sample, drug screen, carbon monoxide measures
- Blood, breath samples from spirometry (PFT) & nitric oxide (FeNO)
Study visits 2-8 (20 minutes): in-person or remote
- Breath alcohol
- Questionnaires on health & tobacco/nicotine use
- E-cigarette pods exchanged (treatment group only)
Study visit 9 (1 hour): in-person
- Breath alcohol, urine, blood, breath samples through PFT & FeNO
- Surveys asking about health and tobacco/nicotine use
Study visit 10 (20 minutes): in-person
- Breath alcohol, breath samples through PFT & FeNO
- Surveys asking about health and tobacco/nicotine use