trachea collapse - dental enzyme

Oh!  I thought that the same dental enzyme chews that nearly strangled my yorkie-mix had actually helped my poodle's trachea trouble.  The yorkie had a soft, collapsed trachea - the poodle gets rigid-trachea attacks and it had seemed like she was better lately so I was going to keep giving her the dental enzyme rawhide chews.  Well, she just had the worst trachea attack she's ever had - ten minutes of strangling.  BOTH dogs are OFF dental enzyme rawhide chews... at least, those made out of the USA.