One of the victims of a shocking  human experiment conducted by the Environmental Protection Agency without test subjects’ knowledge or consent has sued the agency for more than $2 million., according to WNCN in Raleigh.

In 2011, Matthew Cipparone of Durham, N.C. agreed to participate in an experiment at an EPA lab at the University of North Carolina’s School of Medicine in Chapel Hill.

Unbeknownst to Cipparone or the 40 other test subjects, the “experiment” required them to breath diesel exhaust piped in directly from an idling truck parked outside the facility, exposing them to high concentrations of particulate matter for up to two hours – the same particulate matter that the EPA itself claimed was deadly.

Cipparone, a non-smoker with no history of asthma, claims he developed a persistent cough and other symptoms of the respiratory ailment after his exposure. The exhaust experiments, for which subjects were paid $12 an hour, were first reported by Steve Milloy at, who is one of several attorneys now representing Cipparone.

Last month, Senators Jeff Sessions, R-Ala., and David Vitter, R-La.. ranking member of the Environment and Public Works Committee, wrote a letter to EPA officials:

“It is a concern that EPA would assert in the rulemaking process that PM2.5 exposure is deadly while simultaneously asserting in the waivers signed by participants in EPA human exposure studies that these exposures are not harmful.”

At the request of Congress, the EPA’s inspector general has also launched an investigation into the incident.