1899. A lessor may not refuse to enter into a lease with a person or to maintain the person in his or her rights, or impose more onerous conditions on the person for the sole reason that the person is pregnant or has one or several children, unless the refusal is warranted by the size of the dwelling; nor can he so act for the sole reason that the person has exercised his or her rights under this chapter or the Act respecting the Régie du logement (chapter R-8.1). Punitive damages may be awarded in cases where this provision is violated.