well theres a strong oily rubbery smell on the inside of my car and its startin to anoy me! an airfreshiner wont even drown it out!

wat could it be?

wen i bought the car ur man had two tires thown on the back seat but sure the smell of them wouldnt last a week would it?

smell is always there even if air con is off! car is also decat so that prob adds to smell and im also runnin it on pro boost