this is probably why your house stinks

The video uses a common household problem (a smelly drain) and a simple, visual solution to create relatable and shareable content. The use of a specific product in a 'before and after' implied scenario makes it effective.

A person wearing blue gloves uses a pink bottle of Yugou Drain Cleaner to foam up a sink drain, seemingly to clean it. The person then covers their nose, implying the drain was the source of a bad smell.

Yugou Drain Cleaner (Acts: cleans drains, produces foam. Removing it would change what happens in the video.)