$18M Verdict in Florida Brake Dust Mesothelioma Lawsuit

A Florida jury awarded $18 million to Denise J. Guth Cook, a 64-year-old woman who developed peritoneal mesothelioma after years of secondary asbestos exposure to brake dust from her father’s auto repair shop.

Cook never worked with brakes herself. As a child, she laundered her father’s and brothers’ work clothes and visited the shop, where an Ammco brake grinder released chrysotile asbestos fibers into the air. Decades later, she was diagnosed with peritoneal mesothelioma, a cancer of the abdominal lining.

The Case: Cook v. Advance Stores Company

The verdict came on February 14, 2025, in the Circuit Court of the 17th Judicial Circuit in Broward County, Florida, under docket CACE24003818. The original case caption was Denise J. Guth Cook v. Advance Stores Company Incorporated, et al. The original complaint named multiple defendants, including Avon Products, Johnson & Johnson, Advance Stores Company, and auto parts manufacturers. By the time trial began on February 4, 2025, those other defendants had settled or been dismissed, leaving Hennessy Industries, the maker of the Ammco brake grinder, as the sole defendant at trial.

Cook was represented by Maune Raichle Hartley French & Mudd, with Ryan Sweet as lead trial counsel and Kelsey Early on the trial team. Hennessy was defended by Edward Slaughter of Gordon Rees Scully Mansukhani.

The Evidence: TEM Analysis of Brake Grinder Dust

The evidentiary centerpiece was testimony from Dr. William Longo, PhD, a materials scientist and president of Materials Analytical Services in Suwanee, Georgia. Longo used transmission electron microscopy to analyze fiber release from the Ammco brake grinder and testified that grinding asbestos brakes four or more times a day exceeded federal exposure standards. Dr. Brent Staggs, MD, a board-certified pathologist, testified on causation, linking Cook’s peritoneal mesothelioma to her childhood asbestos exposure.

Hennessy’s defense argued that Cook’s cancer could have been caused by genetic factors, natural causes, or exposure to talc-based cosmetics. The jury rejected those arguments and found the company liable.

Under Florida’s comparative fault doctrine, Hennessy was responsible only for its 15% share of the $18 million verdict, which amounts to $2.7 million. The remaining 85% was apportioned among 15 non-party entities, including Johnson & Johnson and various auto parts manufacturers.

Why This Verdict Matters: The Hidden Risk of Secondary Exposure

This case is part of a growing category of mesothelioma lawsuits involving secondary asbestos exposure. People who never worked directly with asbestos are developing cancer from fibers carried home on workers’ clothing, hair, and skin.

According to CDC data, mesothelioma deaths among US women rose 25% between 1999 and 2020, from 489 to 614 per year. The CDC estimates approximately 3,000 Americans are diagnosed with mesothelioma annually.

Brake Dust and Asbestos: A Decades-Long Hazard

Chrysotile asbestos was used in automotive brake pads and linings for decades because of its heat resistance. Mechanics who serviced brakes routinely inhaled asbestos fibers, and their families were exposed when contaminated clothes came home. The auto mechanics brake asbestos risk and brake pad asbestos history are well documented in the medical and legal literature.

The Cook verdict is not the first to hold an equipment manufacturer responsible. An earlier Hennessy $9M verdict was upheld in New York, where the appellate court affirmed a judgment originally reduced by the trial court from a $25 million jury award. The Matter of NYC Asbestos Litigation / Miller decision was issued as 2017 NY Slip Op 06982.

Florida ranks among the top states for total mesothelioma cases, with thousands of diagnoses driven by shipyard, military, and industrial exposure.

What This Means for Families

People who grew up around auto mechanics, construction workers, or other tradespeople who worked with asbestos-containing materials may have been exposed without knowing it. The long latency period means symptoms may not appear for decades.

Abdominal pain, bloating, or unexplained weight loss in anyone with a history of secondary asbestos exposure may warrant medical evaluation. Peritoneal mesothelioma affects the lining of the abdomen and accounts for a meaningful share of mesothelioma diagnoses.

As of April 24, 2026, no post-trial motions, remittitur, judgment notwithstanding the verdict, or appeal have been reported in public sources. The verdict stands on the public record.