A woman accused of spitting in the face of the administrator of Sydney's new Inner West Council during a meeting last month has been given an 18-month good behaviour bond.

Sydney student Nicky Minus, 26, pleaded guilty to offensive conduct, apologised and admitted in Newtown Local Court that spitting at the officer was "disgusting and stupid".

The offence happened at the first meeting of the newly formed Inner West Council where about 200 people, including former councillors, mayors and residents shut down the meeting.

The protesters, rallying against the New South Wales Government's decision to merge Ashfield, Leichardt, and Marrickville councils and the WestConnex project, jeered administrator Richard Pearson out of the meeting.

Minus was caught on camera spitting in Mr Pearson's face as he walked out and today pleaded guilty to one count of offensive conduct.

Her solicitor said Minus was overcome with emotion at the meeting when she found herself unexpectedly in the front row, when she made a spur of the moment decision that was "completely out of character".

She said the visual arts student at the University of Technology Sydney had since endured death threats and panic attacks over the incident.

Magistrate Claire Farnum imposed an 18-month good behaviour bond and indicated she only avoided being charged with assault because Mr Pearson elected not to make a complaint to police.