Andy M above is right... it's the bacteria feeding on the protein that is causing the smell.
Just go to your nearest medical supply store and ask them for the spray for cleaning / deodorizing ostomy sites. That'll solve your problem.
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2006 330i | TiAg | Black | Al | 6MT | Sports Package | Logic 7 retired
2008 335i | AW | Black | Al | 6MT | Sports Package | Logic 7 retired
2013 328xi | Red | Gray | Al | 8AT | Sports Line | Premium | Executive | Heat Pkg retired
2017 340i xDrive | Estoril | Black | Al | 8AT | M Package
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