I can not help much.
Perhaps you could go to a swimming pool supply company with a water sample for testing. Often they test for iron for a small fee.
We had the same problem plus sulfur dioxide smell. We now have a water treatment system from National Water. We now have been "cured."...
I have had garter snakes, black snakes, worm snakes, rat snakes and a copper head snake around or in the house. I like all but the last. Rat snakes eat other snakes. They eat copper head snakes. You could find much worse than a rat snake in you coop...
Numerous disorders and exposures cause a loss or decrease of sense of smell.
https://www.nidcd.nih.gov/health/smell-disorders
Except for persons with no sense of smell or very severe impairment, it is hard to imagine not smelling mercaptan.
JB
Do you remember this video?
https://en-volve.com/2021/02/09/thats-the-sht-i-like-to-see-blm-supporter-celebrates-as-he-films-cop-shoot-white-guy-12-times-graphic-video/
Using a paint ball gun for self defense is most likely not a sound idea.
JB
I have bought and sold knives using Rob Bixby, TheApostleP Knife Service. He runs a sale every Thursday night. E.g.: https://www.youtube.com/watch?v=omKXmIt3UY0
JB
To retard corrosion, the metal is treated with oil or grease then the firearm and a desiccant pack are sealed in a VCI firearm protection bag and stored in a space dehumidified to 40% relative humidity.
I owned a Kershaw Link; however, I did not like the assisted opening.
I favor the AXIS / ABLE / "sliding bar" lock with thumb stud combination.
At present I like the Doug Ritter / Hogue RSK® Mk1-G2 knife over the similar size Benchmade 560 "super freak."
Since Benchmade quality remains...
S&W 586 with canted barrel, dented barrel shroud and blotchy bluing and a S&W 929 with canted barrel, dented barrel shroud, gray powder in it, no lube and more I wish not to recall.
JB
With the round remaining in the chamber and with a revolver chamber aligned with the barrel and firearm pointed in a safe direction, wait 30 seconds then eject the round and leave it alone until I feel better.
JB