Great minds think alike. Leonardo da Vinci. Alexander Graham Bell. Thomas Edison. Brian Conant. Like the better-known names in that group, Conant had a vision and went with it, even though society often laughs at ideas that make great leaps forward, like da Vinci’s flying machine, Bell’s electronic communication device and Edison’s electric illumination source. Hawaii resident Conant invented The Flatulence Deodorizer. Many recall the immortal words Bell first spoke when testing the telephone: “Mr. Watson, come here. I want you.” According to a press release, when Conant first tested his “Flat-D”—a thin, charcoal-activated pad that fits inside underwear, he...