Truss component

Hey there, a singular discolored truss with “Fur” noted on this home in the coastal area of S Florida. has anyone seen this, does it appear to be a natural condition of perhaps the original component or from an external effect?

Never seen that on a truss, but I had a crawlspace support post that deteriorated from salt water from a water softener discharge. I did some research back then and discovered salt water can cause that fuzzy look. Here is a link that might help: