As an actual doctor, I can tell you that a blood clot is different from brochnial asthma. You can have an extreme life threatening asthma attack out of the blue and without a prior history of asthma. It’s interesting, as you get over 40, you’re more likely to get an autoimmune condition, which is what bronchial asthma can be. No one can predict if this happens, and it sounds like it’s a medical emergency that happened out of the blue. I’m not quite sure why people are going on and on about blood clots when if he died of a blood clot in the lungs, they would’ve said pulmonary embolism.