The nose, pharynx, larynx, trachea and bronchi all work like a system of pipes through which the air is funnelled down into our lungs. There, in very small air sacs called alveoli, oxygen is brought into the bloodstream and carbon dioxide is pushed from the blood out into the air.
And, just to clarify, the kitty litter in your trunk, to be used for traction, needs to be taken out and spread around your tires. Most cars are front wheel drive, so the extra weight alone in the back ain't gonna do you much good.
Your indoors cat's litter is probably safe for you to touch during pregnancy. Kitty litter has a bad rap when it comes to pregnant women, but you don't have to panic if your furry feline needs her box cleaned out. While parasites that can infect your cat's digestive tract may be in her litter box, you're probably safe if she's an indoor cat.