Turmeric dust settles on other pantry jars due to its fine, lightweight nature and its tendency to become airborne easily, often exacerbated by opening and closing the turmeric container or nearby movement.
Turmeric, especially in its powdered form, is composed of very small particles. These particles are so light that they can easily become suspended in the air when the turmeric container is opened, when you scoop some out, or even when there's a slight disturbance in the pantry. Air currents, even subtle ones created by opening and closing the pantry door or reaching for other items, can carry these particles throughout the pantry. Because the particles are so fine, they remain airborne for a relatively long time, giving them ample opportunity to settle on surrounding surfaces, including other jars and containers. The vibrant yellow-orange color of turmeric makes this settling dust particularly noticeable. Furthermore, static electricity can also play a role, attracting the turmeric particles to surfaces.
Store turmeric powder in an airtight container, preferably one with a tight-fitting lid and a wide mouth for easy scooping. Consider placing the turmeric container inside a larger, sealable bag for an extra layer of protection against dust escaping.