ou are having guests over and you want the house to smell nice, so you grab a lighter and light your favorite scented candle. Or maybe it’s a gloomy day, and you want to add life to your humble abode with a sweet smell. But what you don’t realize is that the smell you are identifying as sweet is potentially hazardous to your health and the environment. In some cases, scented candles, as they release their toxins and contribute to indoor air pollution, are considered just as dangerous as second-hand smoke.What’s In My Candle?Many candles contain paraffin, a petroleum waste product found in candles, has to be chemically bleached and deodorized before it can be made into wax. It depends on the kind of candle you buy; however, most candles release numerous types of toxic chemicals, such as benzene and toluene. Benzene is cancer-causing and toluene affects the central nervous system. The scent itself in a candle can contain thousands of chemicals, and most chemicals have not been tested for toxicity, in combination or alone. Studies show that these chemicals in scents can cause damage to the lungs, brain, and central nervous system, as well as cause developmental difficulties. Numerous people report scented candles triggering asthma.