Let's see, my household sounds kind of like the crazycatlady

Schnauzi doesn't seem to be afraid of much except the vacuum cleaner.

Tanner is afraid of people when we are outside (on a leash), coffee grinders, the smoke detector and Emily.

Charlie is still a little afraid of humans (he is relatively new to my home), vacuum cleaners, smoke detectors and Emily.

Gay is afraid of everything and everyone, especially Emily.

Bigodinho is afraid of vacuum cleaners and Emily.

Pearl is still getting used to my home, so he seems to be afraid of the other cats, but that is about it (he hasn't been tested with the smoke detector yet )

Emily is afraid of vacuum cleaners, coffee grinders, DustBusters, and not being fed. Emily and Maggie Sue must be related some how because they both have the same effect on other cats.