Body portion 312 also has a second passage 319 configured to communicate with second fluid path 316 to supply a fluid, such as oxygen, to the patient so that the patient may inhale the second fluid.A shown in greater detail in FIG. 32, nostril interface 313 has a first orifice 320 at a distal end 321 thereof that is configured to communicate with first passage 318 of the portion 312 and is also co