Forget images of a harried mom spraying her teenage son’s bedroom before guests arrive. For Procter & Gamble, that approach is as stale as the odors air fresheners promise to eliminate. In new television spots for Febreze, created by Grey New York, the brand recruited subjects off the street, who agreed to be blindfolded for what they were told was a scent experiment. Then, in video captured by hidden cameras, the participants were guided into odoriferous settings, like a dilapi...