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 second x 60 = cubic feet per minute
cubic feet per hour x 0.016666667 = cubic feet per minute
Multiply cubic feet per second by 60 to get cubic feet per minute.
Multiply liters per minute by 0.0353146667 to get cubic feet per minute.
Cubic feet per minute x 28.3168 = liters 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