Paphiopedilum Leaf Spot!? Help!

[iiwii]

Hey all!

Two of my paphs had black spots on the leaves when I bought them originally. Thinking it was just mechanical damage I paid no mind to it. Now these black spots have gotten bigger and have actually began to spread to my other paphs. After doing some research I found it could be a fungal leaf pathogen, bacteria or virus. I want to try and save whatever plants I can prior to this pathogen spreading throughout my collection (which it already started). I have some pictures attached if anyone could help better diagnose the problem so I don't lose any of my slippers!

Thanks in advance for any help,

Pete