I definitely think my W caught the D contagion from 2 friends a couple years ago.
Whether there is an OM or OW, I don't know and don't really care, although I had a recent suspicion about an OM and as is often the case where there is smoke there is fire.
Whether my W passes on the contagion, that's not my issue. I would be stunned if this particular couple D'ed, but who knows? Flip a coin, right?