What is the minimum air change per smoker in the room as per ashrea?

Question:

Answers:
I couldn't find the answer to your specific question, but here's what I did find that may help.

Chapter 3 Commercial and Public Buildings Table 1
Dining and Entertainment Centers - Bars
Circulation, air changes per hour = 15 to 20
Filtering Efficiencies (Ashrae Standard 52.1) = Use charcoal for odor control with manual purge control for 100% outside air to exhaust +/-35% prefilters.

In the comments it mentions that bars are typically heavy smoking areas. It does not calculate a ventilation rate per smoker, rather the air change rate of the room volume. If there is another Ashrae standard that addresses smoking lounges more directly, I do not have it. I typically refer to local/state building codes to determine ventilation rates because they are very specific about their requirements.