When I think about all the homes that we installed asbestos siding on back in the 50's and 60's and know one ever said anything about the dangers of using this material.
And now we have the problems with presure treated lumber and they no longer want us to use it in decks or for building play grounds for kids.
Most of the homes I have built over the past 25 years had these very same decks on them and we were told the only danger was to the carpenters building them when you cut a board and released the fibers of wood into the air. We all read the little yellow warning labels on them back then but it did not seem like a big deal and again ever lumber yard in the country sold the stuff!
The only time I ever saw anyone get sick was when they used the wood cut offs from the deck for wood to cook thier hambergers and hot dogs with in thier grill which was not a very smart thing to do.
Beats Termite Dander!