He should not have started it up without first changing the oil, coolant, and gas, and also pulling the plugs and cranking the engine a few times with them out (in case water had gotten into the cylinders, and then of course put the plugs back in).
That he had to jumpstart would be normal. Any car that sits for more than a month has high likelihood of needed to be jumped. The smell was probably collected dust on the engine and exhaust that was burning off. If it ran poorly, it's probably because gas generally breaks down into an unburnable state in 8 months (so it's a miracle it started at all).
As it's already started and any damage is already done, he should just do what all the other posters suggested.