The Environment Agency expects the odour issues to reduce within the next seven days, environment minister Mary Creagh had told the Commons.
The Environment Agency said Transwaste Recycling and Aggregates took over the landfill site at Jameson Road in late 2023.
The storm ripped off some capping at the Jameson Road, Fleetwood site, unleashing the odour, Transwaste said.
That released a “temporary odour” as old waste was disturbed after six years, but the gas capture infrastructure and new capping solved the odour problem, the firm said.
However, an MP said locals had been putting up with the awful stench for a year now, with some experiencing vomiting, nose bleeds and breathing problems due to the foul smell.