I see. Well, thank you for that explanation. But I don't buy it, at all.
Now, if you can provide some reliable resource for that information I might believe it. Not some funky beeswax candle web site, but a peer reviewed article siting real research.
By the way, as everything (even beeswax) is composed of chemicals.
As for soot-free. I can make you a lovely paraffin candle that doesn't produce visible soot, and I absolutely can make you a very sooty beeswax candle. Regardless of the wax or the candle, combustion always produces soot in tiny amounts no matter what, since matter cannot be destroyed - simply converted and trust me, the conversion of beeswax (plus the wick) is not 100% efficient so it produces more than just energy.