[markem]

That particular white mold is the variety that exists in the air around us and is quite harmless. Since it hasn't penetrated the foot and isn't green/blue, just lightly wipe off the sticks (I use a dry washcloth) and then go ahead and smoke them.

If you plan to store them for a long time, I would recommend putting them in either 5-finger bags or regular zip-locks with the closure sealed. This way you can see if the mold will reappear (unlikely, I would guess). If no new mold in a few weeks, I would guess that you are clear to move them into the regular storage without the zip locks. Btw, it is just fine to store sticks long term in the 5-finger bags.