Boating Coach
On the waterQuestion 533 of 566

You smell exhaust fumes on your boat. What does this mean?

  1. There is no CO, only a bad smell
  2. CO is present only after dark
  3. CO is present, so get fresh air moving through the area at once
  4. You can wait until you reach shore
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Correct answer: CO is present, so get fresh air moving through the area at once

If you smell fumes, CO is there. Move fresh air through right away.

Source: Safe Boating Guide (TP 511E, 2026), What You Should Know About Carbon Monoxide, page 67

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Questions last reviewed: 18 October 2026