If you paint, sand, stuff, cut, shred, glue, spray anything in the creation of your art, you should know what’s going into your lungs.  I’m going to talk and link you to some info on ventilation and respirators.
First, Ventilation:

Ventilation has three purposes: 1) Control temperature 2) it prevents fire and explosions (when gases build up) [...]

Remember the whole hulabaloo over the term ‘organic’ and that it wasn’t really enforced so who knows what’s actually organic and what’s actually not? The term ‘non-toxic’ is kind of the same. The people labeling those crayons “non-toxic” are the same companies making and marketing the product. Since there is no official [...]