Don’t pour bleach down your sink. Bleach kills bacteria but also damages pipes. It’s like using a flamethrower on a spider.
Instead, use hot water weekly. Run the tap for 30 seconds every week. It keeps the biofilm weak and the trap full.
And if all else fails? Light a candle. Name the smell. Call it Gerald. Then tell Gerald he’s not welcome at your sink party anymore.
Your bathroom should smell like lilacs, not a dragon’s armpit. You’ve got this.
