Godzilla vs. Hedorah

Plot :
Hedorah, an alien lifeform, lands on Earth and begins feeding on pollution. Thanks to his toxic nature, as well as his acidic, poisonous body, Hedorah very nearly puts an end to Godzilla in their struggle. Godzilla finally destroys Hedorah by dehydrating him using electrical generators set up by the military and his own atomic ray. The film contains several strange impressionistic animated scenes portraying the smog monster at his evil work.

On a side note, this was the first (and only) time we see Godzilla fly under his own power. He uses his atomic ray as jet propulsion. Director Banno reportedly added the scene to provide a light moment in what is otherwise a fairly dark film compared to many of those which preceded it

in my opion the animated sceanes were very funny