When I travel, I always put a glass and a piece of paper in the sink. You’ll understand why this trick can really make a difference—let me explain!

It’s often assumed that an empty home stays clean and tidy. And yet… the exact opposite happened to me. A sparkling clean apartment, but a sewage smell so strong that for a moment I thought I’d thrown my suitcases down the drain. Want to know why? And most importantly, how can we avoid it? Don’t move…
Why can an empty …