As Mulheres Sempre Querem Mais (1974)

Considered a young terror among women, Ricardo unexpectedly begins to suffer from a strange phobia to noise pollution. That means that any noise during sex leads to a "sexual aversion". A famous psychologist - among other women - cannot cure him. The situation gets worse when his phobia jeopardizes his father's political pretensions. So the whole city, especially his father's girlfriend, decide to help find a cure for the boy.