I only smoke when drinking but just cannot seem to shake this habit. The smell and act of smoking disgusts me when I'm sober but as soon as any booze hits my l

I only smoke when drinking but just cannot seem to shake this habit. The smell and act of smoking disgusts me when I'm sober but as soon as any booze hits my lips, I instantly want a cigarette. Any tips for kicking this? I've been doing it on and off for 18 years so time to stop.