OK... Kat's *fixed* ;
let's work on the Couch!

Most sofas & couches have removable cushions -
examine the cushion to see if it has a Zipper along the back edge that will allow you to remove the fabric cover...
If so - open the zipper and pull off the cover.
Launder or possibly dry-clean that seperate from the padding insert. You should be able to find a German brand of an "enzyme" type of cleaner.

NO Zipper?
Go to an Upholstry Shop and ask about them *replacing* the padding or foam rubber insert.
Even if they have to install a Zipper - that may be a lot less expensive than replacing the whole couch.

/s/ Phred