I just threw away one plant - fast growing black spots in the leaves and two new shoots died, roots pretty well gone (jeez, that was fast). Nice cat that was doing really well. The other only shows signs on one backbulb that I am cutting off and then soaking the plant in fungicide. Fingers crossed that it makes it.
Needless to say, it is well separated from the rest of my plants now.
I made the REALLY stupid mistake on hanging a rescue plant above health plants and then watering all of them. The rescue dripped into the others.
Dumb, dumb, dumb...
I know it is VERY tempting to help out a neglected plant which I have done on a number of occasions but learn from me and... let's be careful out there people!
Thanks all for the help.