Engine Performance problem
2001 Lexus ES 300 6 cyl Front Wheel Drive Automatic 118000 miles

I just realized my car is leaking oil.. So i did my transmission oil change.. Timing belt.. oil change.. cost me over 1500.00 dollers.. then i realized my motor is still leaking.. the inspection people didn't find any problem.. what bothers me most is that my car when in motion smells.. i put my car on park and accelarated to see if the car is smelling and it still smells.. smells like burned tire... really bad... but nothing is burning.. no lights are on.. and the oil leaks and i know its the motor oil.. is the smell related to the leak? are the leak and the smell a major problem? I will donate next time if i recieve legit answer... thanks