In Minnesota, in winter especially, indoor air quality just goes to hell. between the crap shooting out of the air ducts, the mold growing in the walls, and the toxic chemicals offgassing from furniture, carpeting, and home chemicals (airspray, hairspray, cigarette smoke, cleaning products, scented candles, etc.).
Unfortuntately, our poor indoor pets get the worst of it. Trapped in our homes while we are out breathing the fresh air at work or at the grocery store, our pets are unable to escape the putrid chemical soup that wafts down to their level of the atmosphere.
People don't think twice about smoking with pets in the home, spraying their hair with toxic products while the dog sits at their side, and using floor cleaners that the dogs and cats are then going to walk through, and lick their paws when they're done. I tend to forget how many toxic things people have in their homes, mainly because I don't use airspray or hairspray, and I don't clean. Oh, I run the vacuum once in a while, and wipe things up with water, but I never use spray cleaners and only use environmentally safe(r) dish detergents. But I'll bet most people have a little toxic waste dump going on underneath the kitchen sink.
Folks, there's a reason toxic things have labels on them that tell you not to breath the fumes, get it on your skin or in your eyes, and not to ingest the stuff. Don't put your pet at risk for doing those same things.