How much listerine does it take to get drunk?

i was over at my friend dave's house and his dad was drinking listerine so i asked him isnt that just for your breath but he says it can get you drunk too. so me and dave have been drinking listerine all day and we each finished about half a bottle but we're still not drunk yet. how much does it take?
Update: it definitely has alcohol it says 21.6% alcohol
Update 2: thx blow we still have 2 bottles left. i guess we can each chug 1 if we hold our noses lol
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