Hi im 34 yrs old and had a crainiotomy(surgery on the top of the head) April 2005 along with 6wks of Radiation treatments after for a non-cancerious tumor. I also did 6 wks of Physical Theripy for 6wks to learn how to walk agian with my left leg which i temporary lost the use of from the surgery. Last year i started having strange feeling like i was going to be sick and i got light headed then smelled a strange odor like plastic or rubber was burning followed by a small headace. Since then i have had it happen offten while im sleeping and i wake up to it. I really dont know what it is and one of the times it happened my wife and my mother was in the family room watching a movie and i asked if they smelled anything and they said no so i havent made a Dr. appoint yet but wanted to see if anyone has had any symptoms like this before,anything will help........Thanks for reading yall Oh p.s. im also a cancer surviver of Leukemia since 1985,mabe knowing this it may help to find the problem, Thanks again