THE stench that has had most of St Marys-Mount Druitt holding their noses is back.
Less than two years after the Environmental Protection Authority (EPA) held community forums and investigated the problem, people are still complaining.
One resident contacted the Star after recently getting a waft in St Marys.
"It was very strong, like bad body odour," he said.
"What I'm most concerned about is health risks."
He believes the odour comes from crop protection/industrial chemical business Autopak Vetlab in St Marys and has been complaining to the EPA about it for 12 years.
The business wasn't among the Eastern Creek and Kemps Park waste and recycling facilities investigated and fined by the EPA in 2012.
The resident wasn't the only one who smelled a foul odour that day.
"I smell it most mornings and evenings at Minchinbury," Annette O'Keeffe posted on the Star's Facebook page.
"It was bad yesterday during the day also."
An EPA spokeswoman said it would follow up on recent reports.
"The EPA has received two reports in the past week and 19 since the beginning of the year," she said.
"This is the lowest number of complaints we have had in many months."
She said the EPA has received 14 complaints about Autopak since 2004 but none since 2009.
Anyone with concerns about odours should call the EPA Environment Line on 131 555.
Are you still getting the smell? Comment at stmarysstar.com.au.