Cattleya leaf problem (virus)?

[tarajane]

Hello everyone,
I am hoping someone may be able to identify this leaf problem that has recently developed on my Cattleya (i think it is a cattleya).

A few days ago I brought the cattleya's indoors into my very well lit laundry along with some other orchids as it looked as tho something had been eating at the leaves. I sprayed the Cattleya with a Yates anti rot systemic fungicide (phosacid systemic fungicide ), more as a preventative as i had to drench a few cybidiums that had root rot so i just sprayed all of the orchids at that point the plant didn't look this bad.

Could someone make some suggestions on what to do.
I acquired the plant recently from my beloved late mother i am unsure of when it was last repotted it didn't appear to have any problems when i got it, apart from being a very dark green.