Residents in the north Dublin suburb of Raheny have protested against a green waste facility.
The locals claim the facility poses a serious health risk to people with weak immune systems.
The protest was led by parents of children with leukaemia and other ailments, who say they've received warnings from doctors about the site.
One protester said that medical staff had suggested she move house to improve the health of a son who has asthma.
The warnings relate to an airborne fungus called aspergillus, which is found in soil, water and decaying vegetation.