Thank you for the SARS update and first hand encounter. I've always wondered if a device such as the Air Supply AS-150MM Mini Mate portable ozone generator/negative ionizer worn around the neck might protect one from just these types of encounters. I would assume contact with ozone would instantly oxidize and thus destroy the virus. Studies at UCLA conclude that these devices destroy over 90% of airborn bacteria, as well as virus, mold, pollen, etc. In case one is interested, they can be purchased from www.purennatural.com. I have absolutely NO interest or connection with this company but wish only good health to all my fellow citizens.