That has been mentioned before. The 'new car hot engine' smell lasts a long time. When you get out of the car, the vent right behind the drivers door gives the engine smell a straight route out and you walk right through it. Most cars with the motor up front, let the smell go out the front of the car and away from you. I still got a whiff even at 10,000 miles.
As for the monitor, if it detects an excessive load, does it automaticly shut down or do you need to disconnect?? Manually disconnecting the battery terminal takes a bit of time and if things are melting, you don't have much time to protect components. -just interested in how it works-