Life span of silver cables with cotton/air dielectric


Good day Ladies and Gentlemen,
I need your advise and help,  on silver cables.
In detail, recently I have auditioned some silver cables interconnects which are using cotton as dielectric. I liked the sound and I was about to purchase them until somebody told me that they will corrode fast and the sound will degrade.

what’s your experience on this matter?

thank you 
rim
Thinking of this, am I right to say that we should worry more for the oxidation on the nude cartridge thin wires and or our electronics silver and copper elements?
I've Clear Day silver speaker cables for about 4 years and not noticed any SQ deterioration issues.
Stay away get copper of which PURIST is the best.This silver cable with cotton will pick up noise as the covering is very bad PURIST has the best shielding in the business.