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Which is less healthy -- chalk dust from excessive blackboard use, or marker fumes from excessive whiteboard use? : r/AskScienceDiscussion
Is it harmful to repeatedly inhale chalk from a chalkboard? How can I minimize/eliminate dust from a chalkboard without replacing it for a whiteboard? - Quora
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KAYIVA Non-Toxic Premium White Dustless Chalk (12 ct Box) and Colored Dustless Chalk (12 ct Box) Truly Dust Free Chalk for Art, Decorating (Small) : Amazon.in: Home & Kitchen
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Parents warned of alarming new trend of students snorting Smarties that can lead to NASAL maggots | Daily Mail Online
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