I have heard of this even emailed the NCCA as i knew nothing about it , they had not heard of it either, i did some research on the internet nothing either, a friend of mine had a Novalife sofa with soot all over it a bird flew down his chimney and it was all part of an insurance claim, Rainbow tried to clean it but gave up and it was going to be thrown out so he said, you have a go if it ruins it it dont matter, i used M power and extracted with f and f rinse the results were astonishing, well thats what my mate said.
Its now sittng in his dining room and the new sofa is in the lounge the manufacturers say clean with a damp cloth only but that did not work and it was very grubby its supposed to be stainproof and when they bought it the salesman wrote on it with felt tip pen to demonstrate its abilities of stain removal.