One of Cronenberg's first, if not the first of his feature length films. In an insular suburban high rise, a scientist creates a strain of parasites resembling dildo-turds, which are meant to provide a substitute for failing organs, but instead turn the residents into sexually deviant zombies (probably related to their phallic shape).
A back-handed homage to the famous Graduate shot? I hope so. (By the way, the character is retching because the girl who belongs to this shapely leg has been disemboweled).
Cronenberg is many things, but subtle he is not. At least not in the 70s.