> Hi,
> Is there any physical device likea small tube that can be inserted
> and kept permenanmty in the nostril so that the nostril does not get
> blocked and air intake is not reduced, which I believe can cause
> headache???
Yes. There's a device called "nasal prongs." Search for it via Google
or other search engine and you should find it.

Signature
Steven D. Litvintchouk
Email: sdlitvin@earthlinkNOSPAM.net
Remove the NOSPAM before replying to me.