While Ethyl alcohol (${C_2}{H_5}OH$) is used for drinking but Methyl alcohol ($C{H_3}OH$) is not used for drinking because
Explanation
Although methyl alcohol is flammable and has odor, but the main reason of it not being consumed for drinking is because it is highly toxic. It is often used as denaturant of ethyl alcohol so as to make it unfit for drinking.