You can check out medical sites like WebMD, the CDC's page, and WHO's page on the disease. Also go to the doctor to get more information about your disease and know how advanced it is. And you know its accurate and credible in sites most of the time and going on the bottom of the page to see any contact info etc.
It honestly depends. If you are in the middle of fire then the odds are not in your favor. And if you are nowhere near a door/window, the odds are again, not in your favor.
