A NSW MP has avoided a blackmail attempt by two New York scammers who offered a "special massage" and threatened to tell the authorities they were under age.

Kiama MP Gareth Ward has spoken of the "terrifying" ordeal which unfolded when he booked a "normal, standard massage" online but two young men turned up to his hotel threatening to blackmail him.

"It was terrifying," he said. "As soon as I could I made a break and ran to the front desk and they called the cops."

The 37-year-old was staying at the Intercontinental Hotel on 44th Street near Broadway on a personal break before attending a conference in Canada when he booked the massage on Tuesday evening.