Low-quality vape cartridges can pose serious health risks due to the use of substandard materials and lack of proper testing. Cheap, poorly-made vape pens are prone to overheating or underheating, which can release toxic chemicals from metallic elements and increase exposure to carcinogens. Counterfeit or illegally sold vape carts often contain harmful chemical adulterants, such as flavoring agents, that can trigger inflammation and damage cells and lung tissue. Unregulated street carts frequently fail lab tests for pesticides and heavy metals, while even legal carts may contain propylene glycol, which can be harmful when inhaled regularly. To minimize risks, consumers should carefully examine packaging for signs of counterfeiting, pay attention to oil color and consistency, and verify lab test results before purchasing vape carts from reputable sources.