I get the car nice and hot and then look around. As for the smells it could just be a slight steam leak. Using a viewing mirror can help to find um if you run it by the hoses and see if it fogs up. The silicone hoses hold leaks quite well if its a small cut in the line. I didn't find a leak until I squeezed one of them while it was hot.
"torque gets you off the line...& hp gets you over the line." - TTKeeper