Clorox or Lysol wipes use really wet ones ..
Gentle wipe / wash … let it soak into the cork 5-10 mins
Then a rinse in hot tap water .
Repeat process 2-3 times ..
Repeat again next day …
Let rod dry in ventilated space .. keep out of bag and tube for at least a week ..
Clean/sanitize tube .
Re wash sock again.
Ditch tube and sock if needed.
I’ve also used pine sol , Zep HD citrus degreaser, and full strength simple green .
If it’s really Gnarley I’ve used Clorox cleaner+bleach spray on cork to get the smell .
Sometimes you have to let the rod off-gas so to speak in a neutral/dry environment instead of the musty tube and sock in which it came .
I had a few rods I scored locally that were awesome mint rods except they had musty odor .
Took me multiple Lysol wipe sessions and had to keep them in the garage for a good month before they were good to bring into the house .
I had to Clorox spray the cork on a Daiwa graphite rod .
Spray and let sit only a minute or 3 rinse hot water .. repeat as needed be careful.
I’ve heard some guys will clean the cork then take them by the smoke of a campfire to get the musty smell off ..
Good luck