The pandemic of 2020 caused by the coronavirus Sars-CoV-2 involves problems with the respiratory system and has already caused 2 million deaths worldwide. Respiratory diseases are the third leading cause of death in the world. Lung cancer is the cancer with the highest incidence of death and it is widespread among adults and children. For a successful treatment of lung diseases, it is essential to early diagnose them and follow the patient constantly during the disease progress, however, current diagnostic tools are invasive and lack accuracy and reproducibility. A promising method to diagnose and monitor pulmonary diseases is the Exhaled Breath Condensate (EBC) analysis, which allows to trace exhaled Volatile Organic Compounds (VOCs) considered as biomarkers of those pathologies.