Milk is the BOMB at controling powdery mildue, commercial rose growers use milk. I found 1 spray a day for 3 days got rid of it easy!It is powdery mildue. It's difficult to control and will spread throughout your room if left untreated. I would throw out all plants infected, to save the rest of the room.
your welcome m8, just remember to wash off after few hours or it will start to smell/go bad.thanks bro for all the help. i sprayed it with some milk/water