You pull out a shirt or dress worn before and instinctively sniff it before wearing it again. Whether we admit it or not, almost everyone has done the sniff test. Somewhere between convenience, hygiene and sustainability lies this unspoken wardrobe ritual, helping us decide whether a piece of clothing deserves another outing or needs a wash. The sniff test isn’t about avoiding laundry—it’s about making a sensible judgement. If a garment looks clean, smells fresh and hasn’t been exposed to excessive sweat or dirt, wearing it again is perfectly reasonable,” she says.