Prime objective of this article is to Define and Discuss on Odiosoft Rhino. Odiosoft rhino is definitely an equipment used to measure the sound created by nasal airflow. Measurement of nasal air flow sounds helps us to indirectly measure the presence / absence of nasal block in addition to accurately identifying the site on the block. Normal nasal air flow in humans is not laminar nor turbulent, but a number of both. Hence the term transitional is used to describe nasal air flow. Simple mathematical formulae are not used to study nasal air flow dynamics.