Fart Proof Underwear!

An inventor from Colorado has created the world's first fart-proof underwear.

Buck Weimer says his airtight knickers have a replaceable charcoal filter to remove bad gas before it escapes. The undies, called Under-Ease, are on sale over the internet.

Buck, from Pueblo, said he thought up his invention after his wife 'let go a bomb' in bed one night. Buck, 62, and Arlene, 57, suffer from Crohn's disease, an inflammatory bowel syndrome.

In both men and women's styles, the underwear, made from a soft, airtight, nylon-type fabric, is designed for people with chronic flatulence. Elastic is sewn around the waist and both legs.

The removable filter - which looks similar to the shoulder pads placed in women's clothing - is made of charcoal sandwiched between two layers of Australian sheep's wool.

Buck says the charcoal filter isn't too bulky but could capture the bad-smelling gas and allow the non-smelling gas - hydrogen and oxygen - to pass through.

It was developed from gas masks worn by coal miners, reports the Denver Post.

They come as boxer shorts for men and panties for women and sell for $24.95. Replacement filters cost about $5. They are sold with the motto: "Wear them for the ones you love."

The Weimars say flatulence is still a touchy subject for most people. Almost every sale has come via their site.