TikTok is full of entertaining cat videos, humorous dances, and yes, even challenges -- the famed ice-bucket challenge has returned and is promoting mental-health support. But now a dangerous TikTok challenge is spreading through the short-form video app and through schools across the US.

BURLINGTON, Vt. ( ABC22/FOX44) – Firefighters in Burlington are warning residents about the “Chromebook Challenge”, a viral social-media trend that can create fire hazards. BFD says that the challenge is about tampering with batteries inside school-issued laptops to make them spark, overheat, and even catch fire.