My housemate has a rude and seemingly out of touch habit of warming up his car-running the motor-exhaust fumes esp and all, for at least 20 -45 minutes every morning before he leaves the house. On a cold day this means that the house may get super cold as I open the doors and windows to keep house ventilated when his car is running in the garage. So I feel Very anxious about the exhaust fumes entering via the kitchen and the side front of house area where the vent comes out from the garage from the dryer. This makes me panic every time he does this. I dont see why he cant reverse the darn car out of the garage so that its NOT running, once the motor is started , with the exhaust end of car outside the garage. he always gives an Excuse that his car will fail if he FORCES it to reverse out of Garage before its warmed up. I think he's full of BS and is being a Difficult Housemate. Does anyone see things from my perspective. Am i panicking over the exhaust fumes, or is he being extremely rude and pushy in running the car for up to 40 minutes in my garage?