I think I have the exact same problem on my '03 svt. After I park I almost always notice a slight burning smell and if this is the same issue does yours smell more like a fluid burning? I had a pretty bad power steering leak that I had to fix, but after I got the hose replaced I was still noticing a slight burning smell. I thought it might've been some remaining fluid burning off that leaked on the engine, but still months after I fixed it there is still the same burning smell when I park. After that I thought it might just be my hypersensitive nose at work
but after seeing this post I'm thinking it might be something to do with the coolant.