Googled for treatment options:

Desentization

This means that the person is gradually desenstized, using exposure to pictures of vomit and individuals vomiting, with accompanying sounds. Images are graded in categories, according to the amount of anxiety thought to be evoked.
Anti-emetics

This is anti-sickness medication. These reduce the symptoms of emetophobia, but do not give a cure.
Cognitive behaviour therapy (CBT)

This therapy explores and seeks to understand the thoughts behind emetophobia, and what lies behind it – readdressing irrational and negative behaviours.
Clinical hypnotherapy

This can be useful because the process aids relaxation, and builds confidence – lowering anxiety levels in the emetophobe.

It has been noted that some people with emetophobia get better after they have actually vomited. This is particularly relevant for women who experience morning sickness in early pregnancy.

Read more at Suite101: Understanding Emetophobia: Causes, Symptoms and Treatment of the Phobia of Vomiting | Suite101.com http://phobiasanxiety.suite101.com/a...#ixzz0ZXhCS0T9
Since gradual exposure is not realistically possible with the fear of vomiting itself, select programs utilize advanced metal rehearsal exercises that allow the individual to experience the feared scenario in their mind's eye in a manner in which the subconscious takes the imagery as reality, not unlike self-hypnosis. This is a very effective technique when taught properly and even more powerful when incorporated with cutting edge methods from neuro-linguistic programming (NLP). All of the above can be used not only as means of desensitization to the fear, but as means of quickly teaching relaxation in the face of the anxiety.

Unfortunately, due to the relative rarity of emetophobia, there are very few resources for individuals to turn to for assistance with this debilitating phobia. The most comprehensive system available in my opinion is the Emetophobia Eraser program which includes not only all the exercises and techniques discussed, but significantly more, in an easy to follow step by step solution specifically geared to emetophobia. More information can be found at http://www.EmetophobiaEraser.com
http://www.fear-of-being-sick.co.uk/..._treatment.htm