Gel that contains diethylene glycol and ethylene glycol can leak out of damaged freezer gel packs, posing a poisoning hazard if ingested by children or adults.
An exposed portion of the exhaust system can allow debris such as leaves, brush or other flammable materials to enter the opening and ignite, posing a fire hazard.
The brake component housed within the bicycle's carbon fork can disengage from the fork and allow the brake assembly to contact the wheel spokes while rotating, posing a fall hazard.