I read it on of the news reports on this topic suggesting that coming into contact with the bodily fluids of an infected person can spread the disease. If it was only airborne they would be telling people to wash their hands either.
From the WHO and CDC copied from CNN.com
HEALTH WARNING:
The World Health Organization alerts travelers to be aware of the symptoms, which include:
People presenting after February 1 with a history of fever greater than 38 C (100.4 F) AND one or more respiratory symptoms including cough, shortness of breath, difficulty breathing AND
One or more of the following:
Close contact with a person who has been diagnosed with SARS. Close contact means having cared for, having lived with, or having had direct contact with respiratory secretions and body fluids of a person with SARS.
Recent history of travel to areas reporting cases of SARS.
Probable cases are defined as:
A person with chest x-ray findings of pneumonia or Respiratory Distress Syndrome OR
A person with an unexplained respiratory illness resulting in death, with an autopsy examination demonstrating the pathology of Respiratory Distress Syndrome without an identifiable cause.
Note the area I bolded. Im not saying anything like stop doing what you do till they find a cure. Just until they figure out who is at risk and who isn't it. Right now the organizations involved are using the old logic of witholding information avoids panic. Rather than telling the whole truth from the beginning.