Could this be Cymbidium Mosaic or Odontoglossum Ringspot Virus?

[MikeM]

Hello everyone. I'm new to orchids and recently repotted several orchids inherited from my mother who was an orchid enthusiast.

Several of the potted cymbidiums exhibit white streaks of discoloration on the leaves with a few of the leaves on some plants looking much like the attached photo.

Comparing with the few photos on the web and on this board, I think these orchids may be infected with CymMV or ORSV. What do you think? If so, has anyone had any success growing infected cymbidiums in isolation?

I would hate to destroy these orchids in light of their sentimental value, but if there's no hope for them, they will ultimately have to be discarded.