Essentially, the all-milk price is being converted from dollars per cwt to dollars per pound of milk produced, and then the cost of producing that milk is subtracted. For example: $19.59/cwt (Pmilk) x 80 lbs/cow/day (DAMP)/100 - $5.90 feed cost/cow/day (DFC) = $9.77 IOFC/cow/day
There shouldn't be any weird smells in your nose at any time after a Rhinoplasty. Odd smells, redness and increasing pressure are all signs of possible infections after a Rhinoplasty and you should be seen by your Rhinoplasty surgeon ASAP for a nasal exam.
The most common reason for a foul odor coming from the nose is an infection in one or more of the sinus cavities. I would speak to your physician about this. A CT of the sinuses will be the most effective way to make this diagnosis. Unfortunately, a physical examination cannot do this.