Question: What is mouth alcohol in Texas?
Answer: Mouth alcohol is the alcohol that resides in the mouth that will show up on a breath test with the intoxilyzer, which is a machine that they use in Texas. It will show up as the same deep-lung alcohol that they use to test the breath. Dentures, caps are the main cause of mouth alcohol; sometimes we call it residual mouth alcohol. However, reflux, acid reflux can cause mouth alcohol as well. And what that does is, anytime a person has mouth alcohol, it can give a false positive for deep-lung alcohol. So, a person could provide a breath sample and it come out above a 0.08%, but because of the mouth alcohol it’s not a true reading; it’s not a true reflection of whether the person is a 0.08% or not.