Both tobacco and alcohol decrease the resting pressure of the LES (lower esophageal sphincter) at end of esophagus allowing increased reflux. Why you experience a paradoxical reaction would require further investigation.
@olkofri - I am certainly not "anti-smoking mafia", but both do increase your risk factors for GERD. When you are drinking, you wash down the acid as you swallow which can help for a very short time. After a smoke and drink the chemicals are absorbed and enter the blood stream where they then act upon the smooth muscle receptors to activate the effect which would occur a short while after drinking/smoking.
By the way, I got a real Medicasters Degree (MD) and know of which I speak....
-Doc