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Gas or carbon monoxide.Carbon monoxide is odorless , and if you have a leak, and you windows are up, it can make you sick or kill you. If you feel sick to your stomach, sudden onset headache or nausea ONLY when you are in the car, have it checked immediately. It may also make you drowsy. NEVER keep the motor running in cold weather unless you are SURE nothing is blocking your tailpipe, like snow. Be very careful with babies or small children , as they are most susceptible.

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14y ago

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