There will always be some emission when burning a wick and burning something to create a flame. Even electric melt burners would emit fragrance into the air – the emission is after all why we burn scented candles. There are degrees of emission and some candles are definitely worse for your little loved ones (the toxins in paraffin) while beeswax would seem the best option in this scenario. Vegetable waxes do emit some particles but the amounts are much lower than paraffin wax. Then there's also the element of danger in terms of having a naked flame around animals or young humans – which is why guidance always states never to leave a lit candle unattended. Please refer to our tips for safely burning candles and wax melts in your home.