Dear Sue,

While I will surely defer to your credentials, I do not think that the risk
is worth it. If you talk to any experienced grower, he or she will tell you
that, even absent obvious symptoms, a virus may be present. Why would one
take that chance?

As to unsterilized pruning implements, I don't believe that anyone who has
grown orchids for any length of time would take that risk, either.

It only takes one symptomless, yet infected plant to wreak havoc.

Diana