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smells things
huhI've ate lots of bread before breathalyzer tests and never once seen a number that was above what was considered background levels. Maybe if you had the right sourdough or something but in general nope.
suppose the density ain't there
remember reference to prohibition era arguing about how plenty of breads are like 3% alcohol, but a can of beer is .78lbs (according to google ), so you'd have to eat a lot of it