In secondhand vape, scientists smell risk American Heart Association Second hand vape smoke linked to increase of risk of poor respiratory health Second hand nicotine vaping exposure raises risk for bronchitis, breathing problems UPI.com Millions of people are exposed to secondhand smoke every day. People living in multi unit housing are some of the most exposed. The only way to fully protect people from secondhand smoke at Is Second Hand Vapour Harmful? Facts for Bystanders