Kidman "blew feebly" into a didgeridoo on TV show 'Wetten, Dass ?', a high-rating German program while making an appearance along with co star Hugh Jackman to promote her latest epic film 'Australia', the 'Sydney Morning Herald' reported.
The actress has accidentally flouted Aboriginal custom, where women are forbidden to play the instrument. The didgeridoo, or yirdaki, is said to make women infertile.
Richard Green, an award-winning actor, screenwriter and Dharug language teacher said he feared other women would imitate Kidman without realising its dangers.
"People are going to see Nicole playing it and think it's all right," said Green.
"It bastardises our culture. I will guarantee she has no more children. It's not meant to be played by women as it will make them barren," said Green claiming he was disgustedby it.
Kidman gave birth to her first child in July at the age of 41 with country singer Keith Urban. She also has two adopted children from her previous marriage to actor Tom Cruise.
The star of films like 'Moulin Rouge' and 'The Hour', has already expressed her desire to put her acting career on hold to have more children.
A cultural officer Allen Madden has also criticized the actress.
Madden, cultural and educational officer at Sydney's Metropolitan Local Aboriginal Land Council, said Kidman ought to have known better.
"I presume she doesn't know, otherwise she wouldn't be playing it. But (I would have thought) the women on that set would have told her. Baz should know something about it, after working with those traditional fellas on the film," Madden said.
The current incident is the second faux pax associated with Kidman's film, recently a tourism advertisement associated with the film promoted a sacred site without permission from the Aborigines.
The advertisement featured actress Sybilla Budd swimming atop King George Falls in the Kimberley - a sacred site for the Balanggarra people and accessible only through Aboriginal land with the permission of traditional owners.
Recently publisher HarperCollins had to apologise for a section on how to play the didgeridoo in 'The Daring Book For Girls'. They removed the section from the future editions after complaints from indigenous academics.
However, not all indigenous communities consider the didgeridoo a danger, but many do.
Although native to northern Australia, the ethnomusicologist Linda Barwick has written that the strictest restrictions on women playing and touching the didgeridoo "appears to be (in) the south-east of Australia, where.the didgeridoo has only been recently introduced".
