Diva cup smelling bad

Loredana • 27🇻🇪🏳️‍🌈 🇩🇪📍

So two months ago I stopped using my diva cup because it smells weird. I’ve been using it for about 5 months before that last time. I always sterilize before and after using it. I always wash it every time it was full and I took it out to empty sometimes with only water and sometimes if I had the special soap. Can someone tell me if I can still use it like that? Or try to wash it until it smells fine? Or should I buy a new cup? Please I need help 😕