 [ Symptoms ] what causes acid reflux disease [ Disease ] it depends on how much came in to your body if you were breathing the smoke even a little bit you are technically smoking it or breathing it anyway if it was enough to give you a relief from your pain then it could possibly show up on a test it could easily be that the small amount you got from second hand smoke was enough to help you but not enough to show on the ua but i would advise caution if you have to go through those a lot