generalized; unfocused; widespread
For months after the terrorist attack, a diffuse sense of unease lingered in the city.
dis (apart, in every direction)#fundere (to pour, melt) (Latin)
diffusion of air means scattering of air in a place. a bomb is defused not diffused. Wen there is a bomb in the building we SPREAD this news WIDELY and call the bomb (DIFFUSE)ing squad