Residents in the Leeds village, and nearby Apperley Bridge, have taken to social media to complain about the unpleasant smell in recent days.
A spokesperson for the Environment Agency said: "The Environment Agency has received several reports from the public about a smell in the Calverley & Apperley Bridge areas.
"We understand this is distressing for local people and are looking into the cause of the smell.
“We urge anyone experiencing this problem to contact the Environment Agency 24-hour hotline on 0800 80 70 60.”