Smelly Washing from my electrical device!? My Zanussi machine is not exactly unmarked but works perfectly. However a...

My Zanussi machine is not exactly unmarked but works perfectly. However a few years ago wash started to come out smelling vaguely approaching - to be frank - vomit! Then it stopped happening. But for the closing year it's been going on again. It doesn't seem to situation what powder/liquid I use, if I use conditioner or not, take the wash out as soon as it's done, dry it indoors or out! I cannot understand why this should evolve. I clean the drawer etc regularly. It's driving me insane. Has anyone else have this problem? I really need an answer on this one guys!
Answers:    procure a new one for sure