A plan to host a barbecue outside a vegan's home after she complained about her neighbours cooking fish in their garden was 'sad and nasty', her lawyer said.

Massage therapist Cilla Carden from Girrawheen, north of Perth, took her neighbours to court claiming she couldn't go outside because of the smell of their cooking.

After her case gained international media attention this week, anti-vegan trolls set up a Facebook event to host a barbecue outside her home.

More than 20,000 people said they would attend before the event was cancelled on Thursday due to 'logistical concerns'.

Cilla Carden (pictured) complained to the State Administrative Tribunal about the smells that wafted into her garden, the sounds of chairs on concrete, children playing, pet birds and other issues but was unsuccessful

The page was full of abuse for Ms Carden, prompting her lawyer John Hammond to take a swipe at the organisers.

'It's really sad what people are doing, there has been a lot of malicious and nasty comments,' he told 9News.

Ms Carden's series of complaints against her neighbours was dismissed by the State Administrative Tribunal in January.

She then appealed to the WA Supreme Court but her case was again dismissed.

Trolls hacked a vegan activist's account and posted Ms Carden's address on the Facebook to advertise a community barbecue 'in protest of her actions.'

'Don't let Cilla destroy a good old Aussie tradition, join us for a community BBQ, and help Cilla Carden GET SOME PORK ON HER FORK,' the post read.

'BYO hotdog buns, p.s. NO VEGANS.'

But organisers issued a statement saying the peaceful protest, slated for October 19, would not go ahead and they did not condone the harassment of Ms Carden or trespass onto her land.

Ms Carden appealed to the WA Supreme Court but her case, which has gained international interest, was dismissed

'We did this to highlight the constant struggle our farmers are enduring to keep our country fed and safe from vegan extremists,' organisers said.

'Our farmers are constantly having their crops sabotaged, properties vandalised and broken into, families terrified and animals stolen or killed by these militant vegan warriors.'

Organisers then urged supporters to donate money to the charity for farmers Drought Angels.

Facebook users from around the world responded to the invitation, with a Texan writing: 'Roast animals in my honour. Make sure to blow the greasy smoke at miss, can't be wrong'.

Another man wrote: 'Despite the woman's obvious issues, this event is bullying on a massive scale. Come to your senses and call it off.'