Do candles produce carbon monoxide?
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キャンドルによる一酸化炭素中毒
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Woman’s Mysterious Illness Turns Out to Be Carbon Monoxide Poisoning
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Try to make carbon monoxide with candles and glass and won't wrong
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Carbon monoxide poisoning
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ガスストーブは危険なレベルの一酸化炭素を放出する可能性があります
家の中の一酸化炭素の警告サイン
Carbon Monoxide Poisoning
Making carbon monoxide with candles and glass cups
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Carbon Monoxide Kills - 10 Tips For Safety
How to prevent carbon monoxide poisoning inside homes?
Get the facts about carbon monoxide
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