HAARP has been cranking the last two weeks working on the Pacific Northwest. My ears have been low-key ringing as well but not too badly.
People at altitude are more exposed to solar radiation than at ground level. The solar or electromagnetic radiation could be interacting with the magnetic particles in the mRNA Injections and speeding their kill function or causing high levels of cellular heat or inflammation. Regardless, the injection is some form of Bioweapon, thru intent or incompetence.