Black Friday deals from Best Buy are usually posted in November when their Black Friday Flyer is released. Meanwhile, you can see Black Friday Deals from 2016 season (from last year) by clicking below. Checkout all BestBuy Black Friday Deals.
Fumes are harmful more because of what they do to the brain and your body overall, but the biggest dangers of breathing in fiberglass is that the fibers from the insulation can make their way into your lungs.
Even the American Lung association considers fiberglass safe, even thought they recognize it can cause allergic reactions. I suspect you have a dusty house for other reasons. Going to the expense of removing and replacing your fiberglass insultation will make some contractor happy, but I doubt it will help you.