Mine should last me a day...if I keep off the Guinness...US underwear manufacturer has invented pants designed to hide the smell of farts.
The Under-Ease pants have an in-built multi-layered, replaceable filter, made of felt, charcoal and fibreglass wool.
To prevent gases escaping without passing through it, the underpants are made from air-tight fabric and completely sealed with elastic around the waistband and legs.
Under-Tec president and inventor Buck Weimer said: "Under-Ease are underwear for protection against bad human gas.
"We get a lot of jokes - but we don't doubt that this is a serious product that serves a purpose.
"They can be worn anytime, anywhere - in bed, to work, at social events, including professional meetings or when travelling in any vehicle, including an airplane."
The pants are machine washable and the filters last several weeks to several months, depending on the frequency of use and laundering.
The pants are available on the firm's website in a range of sizes and cost from £12 to £15.