I went in to the er to have a kidney stone removed but i had a very bad reaction to the anesthetic gaz that they used. Right after the kidney stone surgery I started coughing up blood and I ve been coughing up blood for the past 3 days. Why would I get this reaction after I inhaled the anesthesia gaz? I m not a smoker but I work with epoxy flooring so Im always exposed to epoxy fume so I always work with a filter respirator.