Hi,
I found that aromatherapy does work for dogs. My Shih Tsu is afraid when it rains...what works is a very little dab of lavender not in the face region but on his chest, ends up curled up like a baby.
Another is a few drops of Bach Rescue Remedy to calm them. There are fantastic books on Homeopathy for pets. Being such receptive creatures, therefore effective.
Hope this helps.
Namaste