If they were nowhere near a bar and there was was no reason for the character to whip out a hip flask and start chugging, yes. If they're in a bar socialising and it's moderate social drinking, no.
Smoking is an addiction. The equivalent for drinking would be showing a character as an alcoholic, and showing them as that with no relevance to the story itself.
Re: Why smoking?
Smoking is an addiction. The equivalent for drinking would be showing a character as an alcoholic, and showing them as that with no relevance to the story itself.