Damage caused by water in between dried leaves

[BrassavolaStars]

Hello all.

I have another issue with a Zygopetalum.

This plant is mostly fine but when I was pulling off some of the dead and dried up sheaths on one of the relatively new growths, the bottom section of the growth had water stuck between a dried up leaf and where the bulb meets the rhizome. The result of this accident is pictured.

What should I do? I already picked off some of the really degraded watery spots.

I was thinking to spray physan and peroxide and dust with cinnamon (avoiding the roots of course).

I always try to make sure water stays away from in between the leaves, some how this one just “slipped through the cracks”. The area isn’t soft. It is a bit grayish/brownish though.

Sorry about the sideways pictures but I don’t know how to change them on my iPad.