This could also happen if you dont clean your sink regularly.

Thanks toClean My Spaceon YouTune for this wonderful tutorial!

You also need to double-check to empty the sink traps every day.

How To Clean A Smelly Sink

Image Credit: Clean My Space via YouTube

After washing the sink, double-check to wipe it dry with a rag or cloth.

You also have to check and clean your p-trap or j-trap regularly to avoid it from smelling.

Pour the boiled vinegar directly into the drain.

Smelly Kitchen Sink Solution

*All these images are credited toClean My Spacevia YouTube.

How To Clean A Smelly Sink

Easy Kitchen Sink Cleaning Hack