To keep or not to keep, that is the question | Whole house fan

[Emory Clayton]

I have a property which has a whole house fan. Its been great while working in the house with the rehab, however I am concerned with a Tennant taking advantage of this: smoking inside, not opening the windows while running it causing a backdraft from other appliances like the water heater which would cause it not able to vent to the outside properly, and I'm sure there are others. 
Was curious as to what other have done with properties that have whole house fans.