Cubic Feet per Minute (CFM) is a measure of how much air (or in your case, smoke) can be pushed. So you'r question is irrelevant.
Approx 706 cubic feet.
cubic feet per hour x 0.016666667 = cubic feet per minute
Multiply cubic feet per second by 60 to get cubic feet per minute.
cubic feet per second x 60 = cubic feet per minute
Cubic feet per minute x 28.3168 = liters per minute
Multiply liters per minute by 0.0353146667 to get cubic feet per minute.
24.72 cubic feet per minute at 700 liters per minute.
3846.184 feet per minute, approx
1 cubic foot per minute equates to about 0.0283 cubic meters per minute.
20 US gallons per minute = 2.674 cubic feet per minute.
Short for cubic feet per minute, a measurement of the velocity at which air flows into or out of a space.
liters per minute x 2.1189 = cubic feet per hour