Thanks for the link to that other thread.
I noticed a left ear ring about a half hour ago. Significant event: Was taking a quick walk, heard and saw two Fighter Jets fly over, the second one staggered behind the first by about 1 minute or so. Hawk flew right in front of me passing to the right. Sat on a tree very close as the second fighter jet flew overhead and made an incredibly large blast, like a sonic boom. Not sure if it was cutting fuel or stalling in order to turn? (I know zip about aeronautics) Also, we have very dense air with an Alberta Clipper storm system roiling in upper atmosphere so it could have been weather related acoustics (I know zip about weather related acoustics)
Tried to see if the jet changed direction, but it had flown over a hilltop. I could still hear them during the entire 30 minute walk in the distance. Then the ear ring started.
One interesting thing, the hawk and I stared at each other for a good ten seconds mentally asking each other, what in the world before he flew off.