Section 19 of the Indian Contract Act, 1872 deals specifically with 'Voidable agreements'. It states that when consent to an agreement is obtained by coercion, fraud, misrepresentation, or undue influence as defined in Sections 15, 16, 17, and 18, the agreement becomes voidable at the option of the aggrieved party. This section provides the legal remedy for agreements tainted by flawed consent.