Attention, chocolate lovers: You may not be able to help yourselves. Swiss and British scientists have linked the widespread love of chocolate to a chemical "signature" that may be programmed into our metabolic systems.
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Usually, people with a chemical burn know if they have been exposed to a chemical. But sometimes the person may be unconscious and unable to talk. Following are some signs that indicate that chemicals are involved
in the injury:
changes in the victim's skin that look like a chemical burn
a chemical smell
evidence of an empty or partially empty chemical container lying around