It’s called a powered respirator they’ll cost around $200-250 for the ones that just offer more comfort than full/half mask respirators to $500 that also offer chemical/hardcover protection to $1000> for special uses like welding/smelting work.

And, they’re great! They keep you cool, then keep particles out, and they don’t need to seal so tight.

Source: have used one for welding.

I'd love something like this for doing remodeling work in the summer. Sweat and fog on the inside of my safety goggles is a serious risk to my safety and sanity.

You can just use the helmet and not the suit -- that was the original design if anything.