In "Shark Tank" season 13 episode 13, Mark Apelt asked the Sharks to invest in his Blowzee invention.

Blowzee makes a unique design that enables users to blow out candles without worrying about spittle in an effort to address this problem.

After Mark Apelt and his silent partner had finished perfecting the Blowzee design, they uploaded it to the Upwork freelance network.

Blowzee Shark Tank: Why Did Blowzee Fail to Bag $100 K Deal Despite Impressing the Sharks?