Well I've had this condition for some 4 decades so I don't remember the comparison. Whilst sense of smell DOES have quite an impact on taste, it is not totally the case. Luckily I favour fresh ingredients anyway and like to cook!
I tend not to notice things burning though (the smoke alarm eventually kicks in)! Of course aromas are lost on me too along with anything subtle tasting. I have been told that, in London, there are many unpleasant smells! I can remember certain smells, nostalgically e.g. of a greengrocer's shop...ha! Where are they now???