It sounds like despite the best efforts of Toronto's health authorities, SARS is on the verge of getting out of their control. The SARS clinics have said that they turned people away with SARS-like symptoms because they did not fit the contact profile, and then it turns out that these people may have been in contact with the virus!
Can you imagine YYZ (and Air Canada, in particular) if the SARS outbreak in Toronto escapes control of the health authorities there and gets loose in the population? YYZ will become just like CLK. Nobody in the world will want to go there. And Canadian travellers will be especially hard hit...how many people a day change planes in YYZ, people that will suddenly not want to go there...not even just to spend 45 minutes at the airport changing planes?
How do you think this will pan out...and what will be the effect on AC and Canadian air travel in general if the worst comes to pass?