horse muzzles and COPD

["Jeff and Anita Carlson" <ranger2@gate.net>]

A friend of mine has a very nice young horse who recently developed a bad
case of COPD.  she spent a week or so at the vet school at Univ. of FL
being treated, came home w/ an inhaler and all kinds of stuff.   
She is looking for a wire muzzle or something she can fasten over her nose 
and put cheese cloth or gauze or something over to filter out dust/pollin
etc. when she is turned out.
She said Libertyville Saddle Shop catalog had something that might work
only it is discontinued.
Anyone have any ideas/suggestions?
thanks.
Anita Carlson
GA