Found This Helpful. Comstock/Comstock/Getty Images. Temperature can affect both the structure of a molecule and how it interacts with surrounding molecules. Heating some molecules, particularly large, biological molecules such as proteins or nucleic acids, will cause them to change shape or even to break up.
The air comes through the diffusers in much larger velocities and different temperatures than the ones tolerated in the space. Due to diffusion, the velocity and the temperature differences are gradually decreased until they reach the tolerable limits.
Commonly used in homes, offices, public restrooms, and elsewhere, diffusers are a generally safe and long-lasting method of scenting the air without resorting to the open flame, hot wax, chemicals or electricity required by different commercial air fresheners.