Aromatherapy works even with very diminished sense of smell as the actual work is done by the olfactory lobe and it is not the aroma which triggers the human body's defense mechanisms; rather the pheromones emanating from the remedy.
You can get ideas by checking these sites :- For more you can Net Search for Aromatherapy and you will get loads of results I hope this helps. Take Care and God Bless.
A diffuser is an attachment for the hair dryer that makes it go in several different directions instead of blowing out in one big blast. It dries the hair without moving it around. Once you have applied the mousse, fixed your hair the way you want it...