An aerosol generator, in particular a soot generator. The aerosol generator includes a combustion chamber, in which fuel can be burned with an oxidizing agent in at least one soot-particle-creating flame, and a fluid feeding device for feeding fuel and an oxidizing agent into the combustion chamber. The fluid feeding device has at least three feed lines, the outlet-side end portions of which run parallel, so that at least three fluids of different types, in particular gases, can be introduced into the combustion chamber unmixed and in a parallel inflow direction.