#1.Ok so when I crank the car & drive it a few hours, I'll pull up to a drive thru & when I let off the clutch, it'll sound like tin can's rattling by the clutch, and I can feel the vibrations of the noise, when I push the clutch in, it all goes away.
#2.When I drive up into the garage & put it in N, I hear a different rattle noise coming from the engine area. Just sounds like metal.
#3. At idle, theres a "puh puh puh" sound coming out of my tail pipes, it vibrates the car every "puh".
#4.Last but not least, everytime I rev high rpms, the car gets this smell, & the best way I can describe the smell is it smells like dog crap.

No idea whats going on here.... Ive always had this dog crap smell when I rev high.

Any ideas?

 

Sucked a dog up into your CAI?

Seriously though, the rattle you describe in #1 is probably the throw-out bearing. Mine has done it since brand new, and always will - not a concern. The rest are a little more difficult. Your best bet is a couple of sound clips.

 

throw out bearing for the metallic noise. With a low idle the car does that. The smell at high revs probably exhaust leak, check your oil and make sure you are not burning it at high revs. I have a small exhaust leak and engine is using a lot of oil and it smells so bad.