When your cat faerie was a cat sitter, and an SPCA cat socializer, and sold our cat products at cat shows she devised a method for removing the smells of other cats, and to make sure that diseases had not hitched a ride.
Enter the house through the garage. At the washing machine change into fresh clothes and shoes which you placed there before you left. Toss the clothes into the washer, then go inside the house. With warm soapy water wash hands up to the elbow, and be sure you get between your fingers too. Your cats probably won’t detect the smells of other cats and there’s no worry about making your cats sick.