Fortuitously I am reading a recent copy of the New Scientist and "News in Brief" there is a samll article on"Life Saving oxygen could be given anally" - stop yer imagination - it is delivered in a liquid.

Tests in pigs prove it works to a degree. And for patients needing oxygen in COVID it could be preferable to respirators because the patient has to be sedated. Except that diarrhoea is also a symptom. But..........