I've used many variants of beeswax and paraffin. I use a powered burnisher, not an iron, and have come to the conclusion that pure beeswax is best for my uses. After burnishing, I go over it with a piece of canvas and that takes care of any tackiness there may be. I have a small crockpot I bought at goodwill and keep beeswax in it. When I need another chunk I plug it in and after it melts I spoon a small bit into a mold and chuck the last of the used one in the pot. Unplug, let cool, back on the shelf until I need another. I've never noticed any particular odor, but I'm not allergic so probably dont pay much attention to it.