Answer: An obsession
Step-by-step explanation:
According to the given question, Mrs swift is alarmed by various types of her own irritating thoughts and the intrusive that her home are contaminated with the germs.
So, the given situation best illustrating the various types of agitating effect of an obsessions.
An obsession is basically refers to the fear disorder that contain the viruses, germs,dirt and the diseases. It is also known as the anxiety disorder where we unable to control our thoughts and behavior.
Therefore, Ab obsession is the correct answer.