Back in 2009, Irina Blok pitched fashionable surgical masks on Shark Tank. All the Sharks thought it was a stupid idea and passed.
Now 11 years later, Barbara Corcoran feels like the stupid one for not investing in the idea. She could have been a billionaire if she did. Oh well, if someone pitches a time machine, then they can go back in time and have a bidding war over the masks. Then one of them would be racking in the big bucks.