​Why don’t we have fart filtering underwear yet?

My husband’s farts are so bad that I recently told my son there should be underwear that removes the smell before it escapes. He laughed and said I should pitch the idea at cocreate pitch. I’ve never heard of that, but honestly, if odor filtering underwear existed, I’d be the first customer. Until then, I guess I’ll keep trying to convince my husband to eat fewer potatoes.