Like most problems in life, the answer to this, is coffee!
Srsly, its why they put bowls of coffee beans on perfume counters in stores. If your nose stops working properly, have a big sniff of some coffee beans, and it will wake right up again.
Unfortunately, this is not recommended here. Losing smell at work is a good thing.
The burgers at the canteen are pretty tits though.
also YAY FKN FRIDAY!!!