Just when you thought you had enough to worry about, the walls in your home could be making you sick.

Right now, an investigation is underway by the Consumer Product Safety Commission to see whether drywall imported from China could be leeching toxic gases into tens of thousands of homes across the U.S. and in Nevada.

From bathroom fixtures, to jewelry, to the knives in your kitchen drawer, any metal in your home could start turning black.

The alleged culprit?

Imported drywall from China, specifically made by the German company, KNAUF DRYWALL

And, now the Consumer Product Safety Commission says it could affect 50,000 homes across 40 states, including Nevada and California.

Attorney, Jeremy Alters says,"This is massive. This will probably be the largest home defect case in American history."

Meantime, testing by at least one builder has shown that the drywall emits sulfur gases that corrode electrical and plumbing components.

And according to America's Watchdog, they claim to have received numerous complaints from Nevada, while at least three lawsuits are pending in California.

They believe the toxic drywall entered the U.S. in major ports of entry in Oakland and Long Beach, California during the housing boom between 2004 and 2006.

They believe the toxic drywall entered the U.S. in major ports of entry in oakland and long beach..

Meantime, in Florida, where the problem was first detected, many homeowners are also getting sick.

Bonnie Fulks, says her 3,000 square foot home in Cape Coral, Florida smells like rotten eggs, and she says aside from the metal in her home turning black, she, her husband, and their dog have all developed a constant cough.

Bonnie says,"I'm getting some nosebleeds, I'm getting some headaches when the heat is coming on and the doors are closed up."

If your home was built between 2004 and 2006, experts say the best way to tell if you have toxic drywall is to go to your attic, or garage and look to see if the name KNAUF is stamped on the exposed drywall.

At this time, the German manufacturer with plants in China has yet to comment on the situation.

However, the C.P.S.C has been investigating all brands of Chinese drywall for more than a month.

Right now, we have calls into the C.P.S.C as well as major builders across the Valley, but so far, no one has returned our calls.

Meantime, we want to hear from you, we want to know if you have imported Chinese drywall and if you've experienced any problems with it click here to let us know in our blog.