[en] We explore the possibilities of experimental studying the anomalous damping of quark and gluon collective excitations in hot hadronic matter ζ_q,g ∝ g²Tln(1/g) calculated accurately in our recent work. We show that this studying involves serious difficulties. Resumming accurately all the relevant graphs we find that low frequency polarization operator of colourless currents does not depend on ζ. There may exist fine effects, however, involving some influence due to ζ which are in principle measurable. One of these effects is some increase of relaxation time which in relativistic plasma is not seen, unfortunately, in the leading order. For low density nonrelativistic plasma, however, the effect may be significant. (author). 16 refs, 6 figs