Boring. The method: Boil water, pour it into a heatproof bowl. Add a drop of eucalyptus oil (menthol tricks cold receptors) and a drop of peppermint oil (triggers TRPM8 receptors for a cooling sensation). Drape a towel over your head to create a personal sauna. Now, here's the weird part: breathe in for 4 seconds, hold for 2, then pant out like a dog for 6 seconds. The rapid exhalation creates turbulence that mechanically shears mucus off the walls.

To prevent a blocked nose from occurring in the future, try the following: