There is no evidence suggesting that Modi asked COVID-19 patients to keep the hospital windows open for better oxygen supply.
The Prime Minister chaired a meeting on April 17, 2021, to review the preparedness to handle the COVID-19 second wave. He was briefed on various aspects of medicines, oxygen, ventilators, and vaccination. PM Modi directed the officials to speed up the installation of medical oxygen plants and supply oxygen to produce medicines. Other than that, he did give any tips to corona patients on managing the supply of oxygen.
However, experts have said that open windows and ventilated spaces will help prevent the spread of COVID-19. The respiratory experts said in a commentary published in the journal of BMJ that poor ventilation poses a risk as people may easily get infected in a closed room. They argued that this simple measure has been overlooked and only mentioned cursorily.
The COVID-19 pandemic has given rise to a lot of potentially dangerous misinformation. For reliable advice on COVID-19 including symptoms, prevention and available treatment, please refer to the World Health Organisation or your national healthcare authority.