Musty Smell on Dry Wall due to water in attic

Roof had a leak and we noticed small brown spots on the ceiling in a corner. Had roof inspection and looks like it was due to a nail pop but it’s hard to say for sure bc the roof will need replacing in the next 2-3 years either way. Nail pop has been repaired and I assuming that will stop the water getting in.


I am running moisture meter on my wall and ceiling in the area and it’s showing around 40% over about 5x5 area on wall and ceiling. I can also smell something musty which I suspect is mold on the back of dry wall I just can’t see it.

What are my options? What can I do or who should I call to get this taken care of?


ETA: I should also add. Our attic fan went out last year and it has not been replaced. We have been here 6 years and this is the first year we have had this problem