This is a claim without scientific basis; there is no necessary connection between owning a cat and whether it will bring good fortune to the home.

Owning a cat can bring many benefits to people, such as:
Cats are cute and lively animals that can bring joy and companionship to people.
Owning a cat can increase a family's sense of security because cats have very keen hearing and vision, enabling them to hear sounds that humans cannot hear and see things that humans cannot see.
Owning a cat can reduce odors and dust in the home because cats have a very sensitive sense of smell, which can help owners find and clean up these harmful substances.
Therefore, while owning a cat has many benefits for a family, it's wrong to assume it will bring good fortune. We should rely on science and rational thinking, and not easily believe or spread such claims.