A pillowcase can look pristine. Yet when a cat settles beside you, loose fur and dander can reach the sheets, while Fel d 1, a protein allergen carried in saliva and skin secretions, adheres to hair, fabric, and hands. A soft purr. Hidden cargo remains. Clean? Not automatically.That purr is a poor alibi. Litter dust can cling to paws and coat, then become particulate matter in bedding; outdoor cat...More