One suggestion.....
 
$50 exhaust fan from home depot.  The type we have and that are at Randy's
place.
 
Then suggest he gets one as well for his smoking.  Bickering about smells
is going to get him no where.
 
This way you've at least made a proper attempt at covering your end of air
management.  The rest is up to him.
 
Personally I don't think it's the ferrets he's threatened by.
 
Rob
[Posted in FML issue 2419]