In Season 5 of Shark Tank, Charles Michael Yim introduced Breathometer, a smartphone breathalyzer designed to measure blood alcohol content. He secured a $1 million investment from all five Sharks for 30% equity. However, the product later faced issues due to inaccurate readings, leading to a Federal Trade Commission settlement requiring refunds to customers. As of 2023, Breathometer is no longer available, and Mark Cuban has referred to it as his worst investment on the show. 
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Mar 18
