Researchers believe that obesity is related to the parasitism of certain microorganisms that can produce specific gases in the human body. These microorganisms make the breath they exhale more unpleasant. The Los Angeles CS Medical Center analyzed the breath of 792 physical examinees and found that the exhaled methane and hydrogen The high-bodied person has a height and body mass index (BM2) 2.4 points higher than that of normal people, that is, they belong to obese people. Based on the above description, cannot be launched? ['Fatty people may parasitize certain microorganisms that produce specific gases.', 'You can determine whether the breath is bad by the bad smell or not.', 'People with high methane and hydrogen content in exhaled breath are fatter than normal people.', 'The mixture of methane and hydrogen tastes bad.']