You are hinting at two different problems. One is DNS
which contributes partially to obstruct while enlarged conchae are responsible for total obstruction. While polyps are extra growth in th nostrils. In ayurveda we can reduce the enlarged conchae but not deformity
of bone, If the enlargement is cured breathing becomes smooth even in presence of DNS. Polyps too if inflammed response to medication and allow patency of nostrils. Improve the immunity of body. Maha lakshami vilas ras swarn yukat and tab. A flucil forte help to cure.
There is a procedure in panch karma called nasya which offers excellent results , in this there is facial massage
with medicated oils and then few drops of medicated oils are dropped in nostrils.
Dr. Rajesh Lakhanpaul