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https://interestingengineering.com/health/smart-mask-analyzes-chemicals-track-disease

Exhaled breath condensate (EBC) harbors rich molecular information that could unveil diverse insights into an individual’s health. Here, we introduce EBCare, a mask-based device for real-time in situ monitoring of EBC biomarkers. Using a tandem cooling strategy, automated microfluidics, highly selective electrochemical biosensors, and a wireless reading circuit, EBCare enables continuous multimodal monitoring of EBC across real-life activities. We validated EBCare’s usability in assessing metabolic conditions and respiratory airway inflammation in healthy participants, patients with chronic obstructive pulmonary disease or asthma, and after COVID-19 infection.