My car has recently been giving me the following problems:
Is there a way to remedy the smell and the noise? What are some things to look into if I try to fix this myself?
You need to listen to the exhaust pipe and manifold on the engine and see if you can hear where the noise is coming from. If the exhaust pipe is cracked, then I would recommend getting it fixed as soon as possible. Exhaust fumes in the passenger compartment should be diagnosed ASAP as they are not good for you to breathe. You may be able to stop at an exhaust shop and they could put your vehicle up on a lift to tell you where the leak is. Then you could have a mechanic, like one from YourMechanic, diagnose the rattling noise and give you a quote to repair it for you.