Coupar Angus residents say they are at the end of their tether over hideous smells emanating from the town’s chicken-processing factory.
Some householders say the odours from the 2 Sisters Food Group building are so bad, it is making them sick.
Claims of pungent pongs have led people in neighbouring properties to write to MSP John Swinney.
Resident Amanda Williamson said: “I’m raging. You can’t hang washing out and can’t open windows. It makes you feel like you are going to vomit.”
Maryann Bannigan said: “We have a right to live without odour pollution.”
Mr Swinney said: “I am aware of the renewed issues regarding odour from the 2 Sisters factory.
“I have once again been in contact with Sepa, and I am hopeful the situation can be resolved in a satisfactory and timely manner.”
The 2 Sisters Food Group confirmed Sepa had been notified of the claims and two environmental officers visited the site, however they “did not report any odour issues”.