By the time subjects are symptomatic with breathlessness, they will have already have severe impairment of lung function, and stopping smoking at this stage may extend their life expectancy but may not improve their symptoms
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So, it's the same issue with secondhand smoke that secondhand vapor contains all the same chemicals as if you were vaping yourself, just as secondhand smoke contains all of the same chemicals as if you were smoking yourself, Gordon said
[DOI] [PMC free article] [PubMed] [Google Scholar] 119.Bautista DM, Jordt SE, Nikai T, Tsuruda PR, Read AJ, Poblete J, et al