 When Elmer is summoning the various forces of nature ("North Wind  bwow! South Wind bwow!" etc.), Mel Blanc (qv) does the summoning  on the final incantation ("Smog!") because Arthur Q. Bryan (qv)s  reading was not strong enough. Bryans reading of the line can be  heard on the Looney Tunes Golden Collection Volume 2 DVD vocal only  audio track.