I have a knee problem that needs surgery. Because I have MS, the doctor chose to do Prednisone injections and then ordered a drug called "Synvisc". I received 3 injections in the knee over a 3 week period. After the first injection, I started to smell a chemical smell (petroleum fumes). I didn't relate to it to the shots until after the 3rd one.....and after we had to remove a gas fireplace and tear the house apart because of the fumes. The smell is getting worse especially after they did allergy testing with phenol. I have no relief from my nose burning, coughing, migraine headaches, and this terrible chemical odor. I am especially allergic to gas fumes, ink, plastics, etc. Any ideas?