A 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.

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