Sunyaev-Zel'dovich effect and the dust emission in the galaxy clusters

It is shown that if the dust is present in the hot intergalactic gas, the galaxy cluster must be very bright source of far infrared emission. This emission can be observed by modern IR astronomy methods. At the same time, taking realistic assumptions about the intergalactic dust nature, it is impossible to explain negative results of the attempts made at observational detecting the Sunyaev-Zel'dovich effect in the centimeter wavelength region as the compensation of the expected decrements by the dust grains emission.