tokine (IL‐1β, IL‐6, IL‐8,IL‐10,TNF‐α), Concentration of the myocardial enzymes NCT04293692/Recruiting, Feb24‐Feb1 2020–2021 The Use PUL‐042 inhalation solution to prevent COVID‐19 in adults exposed to SARS‐CoV‐2 Drug: