@purewow: What air freshening hack should we try next? #hacks #homehacks #airfreshener #bakingsodahack Here’s how to freshen the air with baking soda: Step 1. Mix 2 cups of water with 1 tablespoon of baking soda. Step 2. Add 15 to 20 drops of an essential oil. Step 3. Stir together. Step 4. Transfer to a spray bottle.