Question To avoid carbon monoxide poisoning, a driver should: Answers Have their exhaust system checked regularly to be sure there are no leaks. Keep their engine turned off when their vehicle is enclosed in a garage. Both of the above. Explanation Carbon monoxide fumes are odorless and deadly. Symptoms of carbon monoxide poisoning are sudden weariness, yawning, dizziness, and nausea. The only cure is an adequate supply of fresh air. Take a FREE Practice Test Now This questions appears in the following tests: Alabama Practice Test