I ran across this short article, on Yahoo! Sports of all places, mentioning what appears to be a promising treatment for COVID-19, in the form of an inhaler.
This from the linked article:
The "minimally invasive" treatment, developed at the Abu Dhabi Stem Cell Center, involves extracting blood from patients, isolating stem cells, activating them, and turning them into a fine mist that the patient would inhale through a nebulizer or similar device, al-Kaabi said. It has helped alleviate coughing and other pulmonary symptoms, and "we've been happy that our initial safety results are promising, that's why we're heading into the next phase, of effectiveness of this treatment."
So far, only 73 patients, "with moderate to severe symptoms [of the Corona Virus]" have been tested with this novel treatment and, according to Dr. Fatima al-Kaab, and all of them were "successfully treated and cured".
It's believed to treat the symptoms by "regenerating lung cells and modulating the immune response to keep it from overreacting to the COVID-19 infection and causing further damage to healthy cells."
Dr. al-Kaab suggested that this treatment could be ready for the market in as little as three months, putting us at around early August, 2020.