Copper gas lines, propane in this case, hanger material?

Got a call for dead animal in crawl space, ongoing for weeks. Pinpointed odor to lowest level slope of crawlspace, not decomp. Smelled like gas to me.

Spotted flexible copper line tacked to joist with rusty staple.



Am I correct in suspecting possible galvanic corrosion issue?

My professional opinion is to have a plumber or HVAC guy run all of his gas lines checking for leaks.

BTW, his pest control concurred on gas odor.

That line was traced back to the gas main.

I see mold,,,,,,
Copper pipe is easily tested with a bic................

or soapy water ifn.........

Two diff metals touching causes corrosion. Try to isolate that line and see if the smell goes away.

Propane can be in copper, natural gas can not, it uses black iron pipe.

Not my wheelhouse. I know enough to spot possible issues then hand it off. I ain't signing up for any extra liability.

wusssssssssssss

In NC we can put Natural gas and Propane in Copper tubing. I would refer this to a plumber or gas technician. As a plumber I know it can cause galvanic corrosion. I also know that while possible it is not very likely. The only time I have seen this is on a 3" line insulated with fiberglass insulation and the wet insulation from condensation on the ceiling was causing the electrolysis.