Rear driver side coolant leak

[Frazier213]

I have a 2012 Ford Explorer base model v6. My coolant leaks right above my driver side muffler and it smells bad. I’ve brought it to a shop they said was fine but it’s just progressively getting worse. I need help trying to find either the full lines to replace them or if anyone knows any tricks to fix that part of the line

 

[peterk9]

Welcome to the Forum.
How can they say it's fine when it's leaking? Is it a pinhole type leak? Is it easily accessible? I know a few members have had pinhole leaks in the rear A/C lines and were able to fix them sometimes. I had that type of leak in a copper water line in the basement and was able to fix it with a strip of rubber and a hose clamp. That was about 20 years ago and it's still holding.

Peter