What Could Cause A Burnt-oil Smell From Pores, Urine, And Stool For More Than Three Months With Left Kidney Discomfort?

58y/o and i been having this smell thats coming out of my pores, my pee and my poop..kind of like brunt oil or close to that.its been over 3 months and last doctor did even waste time trying to help.i also told them my left side kindey feels like someone is grabbing it..