Dr Karl (hugely respected media personality scientist guy from Australia) likes to point out that candles are bad for your lungs, but on the other hand they can

Dr Karl (hugely respected media personality scientist guy from Australia) likes to point out that candles are bad for your lungs, but on the other hand they can be relaxing and peaceful so it's kinda six of one, half dozen of the other. And as he also is fond of saying: "everything is a poison... what matters is the dose."