Uh, proof? People being around chemicals all the time that end up being more harmful than first believed is common enough. Let's take lead and asbestos for easy examples. BPA for a more recent (but I think more controversial?) one.
Lots of things aren't regulated by the EPA, the FDA etc. Major cosmetic companies used lead in lipstick until fairly recently...
And ironically enough, a lot of the toxicity from Mattresses and furniture etc is caused by the government regulation because it's from requiring them to be treated in Fire Retardants
> The problem is that it doesn't pass the sniff test. Do you really think that your mattress is poisoning you?
That's not how... thinking works. Do you really think cigarettes are poisoning you?