Basic rule of them is... if something is burning indoors it is hurting you. Candles are unregulated anything could be in those fragrances and even wax in its purest beeswax form is not safe.
Just to be ABSOLUTELY CLEAR the alcohol that I am going to continue to imbibe is more dangerous than the citrus zest I'm putting in my drink. I will most likely keep putting zest in my beer but I will not be using Citrisol as a solvent and if something is labeled with the "natural" cleaning power of oranges I will choose another product.
@sneezles61 I did ask about silicosis and our instructor surprised me by telling us that farmers, the tillers of earth, have some of the highest rates of silicosis. Finally I have confirmation that going to the beach is killing me (points fingers at wife)
Also the label "Nontoxic" means nothing in the US. It means that the chemicals most likely have not been tested yet and if they have been tested that less than 50% of the rat/mice that were fed the ingredient died in 2 days. SO because lead, cadmium, cobalt and asbestos take much longer than a few days to kill they would technically fall into a non-toxic label.