Newer preservative formulations that do not contain arsenic have largely replaced CCA, but it is still not recommended that they be burned. Treated wood is often used for decking, railings and exterior trim.. It is perfectly safe to burn these woods.
Learn why burning treated wood is prohibited, and the possible side effects of specific chemicals. Few of them are safe.. In 2004, manufacturers of treated wood were forced to stop using CCA for pressure-treating lumber for residential use.
Treated wood should not be burned in stoves, fireplaces or outdoors because toxic chemicals are produced as part of the smoke and ash and can be harmful if inhaled. It is legal to dispose of treated wood in the landfill, although it's always best to find a way to re-use it.
Nothing good comes from burning pressure treated wood, smoke/gas. . an irritant the dust from cutting pressure treated was pretty much safe.