Heated Tobacco does produce a scent, and therefore smells
Thus, these individuals presumably would not have had any change in potential CO protection or ANA prevalence between Periods 1 and 2, since vaping did not begin until 2007, but would have had a decrease in potential CO protection and, consistent with our hypothesis, a corresponding increase in ANA prevalence between Periods 2 and 3, as some of them took up vaping
2012;121:247252 [DOI] [PubMed] [Google Scholar] 23.Hindocha C, Lawn W, Freeman TP, et al
38169) (online catalogue)
Of course, after 25 years of The X-Files , fans likely aren't going to start referring to Old Smokey as "Carl," but it's still nice to have a definitive answer