Chemical reactions involving potassium permanganate can be dangerous and should be approached with caution. Safety precautions should be taken when handling the chemical compound, as it can react with various substances commonly found in households. For example, glycerine and antifreeze can produce a strong flame when mixed with potassium permanganate, making it a popular firestarter in survival situations. However, propylene glycol can also react with KMnO4, and should be avoided. It is important to store potassium permanganate in a non-metallic, non-reactive container and away from light to prevent any potential reactions. Fumes produced when heated can also be harmful if inhaled, so proper ventilation is necessary. Overall, it is essential to practice safe handling and storage of potassium permanganate to avoid any unwanted chemical reactions.