The correct choice for what is NOT a sign of a CO2 leak is option B: A strong chemical odor. Carbon dioxide is odorless, so any chemical smell might indicate a leak of a different substance. Frost on the tank and hissing noises are both actual signs of a CO2 leak.
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A strong chemical odor is NOT a sign of a CO2 leak, as CO2 is odorless. Frost on the tank and hissing noises are both signs indicating a potential leak. Recognizing these indicators is essential for safety. ;