I had the same sort of multiple pulmonary emboli in both lungs more than a decade ago, after same day surgery that did not go well. Later, my MD, an old friend, told me there was a good chance I might not have made it. Right after the supposed same day surgery they were processing my discharge when he noticed that my breathing was unusual. Down for an immediate cat scan, followed by two weeks in hospital on blood thinners. That was in the summer, and that winter I was back in Dominica diving. The hematologist gave me a handful of injectables to take with me, but said that my blood chemistry was completely normal. I'm 77, and still dive, though only warm water and not too deep. I have 'significant scarring', mild COPD, and see a pulmonologist regularly with low dose cat scans every year. So far so good. No problems with scuba. My breath holding is not what it was, though that could just be age. I figure the virus might easily do me in, but that's just how it goes. I hope to be doing a little local inlet and jetty diving this summer.