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Where should you avoid swimming to prevent the risk of carbon monoxide poisoning?

  1. Near the beach

  2. Under the back deck or swim platform of a boat

  3. In the deep sea

  4. In a swimming pool

The correct answer is: Under the back deck or swim platform of a boat

The boating environment is a common source of carbon monoxide (CO) exposure. Engines, generators, cooking ranges can release high levels of this colorless, odorless and poisonous gas, which can build up even more if your boat is docked at a marina, a dead-end cove, or other enclosed area. Swimming under the back deck or swim platform of a boat would put you in close proximity to these sources of CO and increase your risk of poisoning. Swimming in open water, such as a beach or a swimming pool, may still expose you to CO, but the concentrations are typically lower compared to those in the immediate vicinity of a boat.