I have such a dry cough. It is worth trying.

Spot <NoSpamMe@verizon.net> wrote in rec.pets.cats.health+behav:

Well, she is indoors all the time, though I let her out on the
balcony a couple of times (cat safe).  There isn't any a/c except
for a wall unit in the living room and this place is old, drafty.  
Perhaps there are other things associated with the age of the
building bothering her.  I wonder if it has something to do with her
sleeping in front of the fan--cause or attempt to cure.  She's not
otherwise wheezy, so maybe it is a little dry cough episode because
of the dryness.  If it continues I might get a humidifier.  I hate
to do that when we're only here for two more months and going back
to humidity central.  LOL.