Is your house stale from windows being closed? As great as the cool air is, it can get stagnant. Avoid the chemicals in sprays and scented candles with the household must-haves: baking soda and vinegar. Sprinkle baking soda under mattresses or sofa pillows, and on carpets before you vacuum. You can also put baking soda or dryer sheets in vacuum bags and cylinders. Also, a small jar of vinegar near vents neutralizes odors (the pickle smell fades quickly). Put out a fresh jar once a week.