There may be several reasons for the unpleasant smell of smoke from the VAZ-2110 silencer. The most common of these are the unbuilt catalyst, the unquality petrol (one can try to change the place of filling), the consequences of the lack of professionally performed capital repairs, the introduction of oil or coolant into the combustion chamber, and much more. A source of the unpleasant smell of smoke from the VAZ-2110 silencer will be available only to the specialist on the basis of such data as smoke colour, the nature of the engine, the engine coolant level, and the engine coolant level.