Which sign in canned foods raises suspicion for botulism risk?

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Multiple Choice

Which sign in canned foods raises suspicion for botulism risk?

Explanation:
Gas production inside a sealed can from anaerobic bacteria causes the container to swell or bulge. That swelling is the clearest warning sign of botulism risk because Clostridium botulinum grows without oxygen and releases gas. A normal-looking can offers no warning, while a cracked lid or dented can can indicate the seal is compromised but isn’t as specific to botulism. Cans with no odor can still be dangerous since the toxin is odorless, so lack of smell doesn’t guarantee safety. If you see a swollen can, discard it safely without tasting.

Gas production inside a sealed can from anaerobic bacteria causes the container to swell or bulge. That swelling is the clearest warning sign of botulism risk because Clostridium botulinum grows without oxygen and releases gas. A normal-looking can offers no warning, while a cracked lid or dented can can indicate the seal is compromised but isn’t as specific to botulism. Cans with no odor can still be dangerous since the toxin is odorless, so lack of smell doesn’t guarantee safety. If you see a swollen can, discard it safely without tasting.

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