Is a portable oxygen spray capable of saving a person's life if their oxygen levels drop due to COVID-19? "Bare minimum oxygen requirement for patients with breathing problems due to coronavirus is a litre/minute. A portable oxygen canister holds about 12 litres of oxygen. The spray will last for about 10 minutes, it is a useless product," says Dr Jeenam Shah, Consultant Chest Physician and Interventional Pulmonologist, Mumbai.
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