Guys I looked everywhere and I dont know where this really bad smell is coming from.
It smells like burn oil coming from the engine. You can smell is from out side the car and from inside the car.

Sometimes is smells like burnt plastic. I looked for plastic bags under the car around the cat and could not find anything.

Can someone post a diagram of where the vac lines are so I can check them?

 

cabin filters could be water under the carpet