Gonna have to skip my run today because my left knee feels like a spike got inserted into the joint on the inner face, low down on the joint. It's not the first time I've had joint problems. People with gout get to learn all sorts of things about joints and how painful they can be.
That doesn't mean I'm not doing anything, though. One thing I figured out years ago is that whining about what I can't do is a losing strategy. Much better to determine what I can do, then do it.
Perpetual forward progress - it may not be fast but it should be relentless.
Run gently out there. Mind the smoke.