CEACAM5 and lung cancer: Carcinoembryonic antigen (CEA)-a common biomarkers in lung cancer development [28, 29]and potential biomarker in early detection of lung cancer-from atomized aerosol and albumin-the indicative of early asthma deterioration [30]and a widely used reference marker of dilution in bronchoalveolar lavage fluid [31, 32]-both in atomized particles and human exhaled breath are studied.