<s>[INST] I had an spontaneous Subderal Hematoma last year. Which was surgical evacuated, and two Buhrr holes put in the right prefrontal cortex. I have not had subsequent problems. However, I started smelling burnt toast a few days ago, and became concerned as one of my previous symptoms was things tasting and smelling strange. Do I need to go in an have a cat scan. [/INST] Yes, you should go for ct scan because subdural haematoma can recurr also. If you have headache and other symptoms then consult your doctor and investigate. and then take treatment accordingly. Thanks for using health care magic. </s>