APG we will have to agree to disagree and I have also seen the restriction on bottles, to which I tend not to agree.
I am not denying the existence of rebound phenomenon but as i have said......i think that it is over diagnosed.
Nasal medication comes in many forms, steroids, vasoconstrictors , combination of both and solutions that do not contain any pharmacological agent.
Nasal problems come in many forms, allergy, infections anatomical deformities etc and to me , the point of the instructions on the spray limiting the length of use is more to do with the incorrect diagnosis than any "rebound" phenomenon.
As for your particularly personal nasal problem, i would have though that your loss of smell was due to a viral infection rather than any form of rebound phenomenon as a side effect of your nasal spray.
Just my opinion I might add, not shared by everyone.