Toxins

Given that an overhead projector can overheat enough to make parts melt or catch fire, another danger of using this equipment is potential exposure to toxic smoke. When certain parts, such as plastic, metal or fire retardant chemicals heat up or burn in equipment, toxic chemicals and heavy metals enter the air. Even with adequate indoor ventilation, you might experience short term or long term health issues including skin or eye irritation, upper respiratory problems, headache, nausea, fatigue or cancer, or exacerbation of pre existing issues like asthma.