You haven't lived till you have flushed your nostrils by sticking a syringe of sodium bicarbonate water up one nostril, holding your breath, and pumping the stinging liquid out the other nostril.
Three times each nostril. Three times a day. Fun and laughter for all.
Though I must add, nothing clears the nose of allergy-induced mucus better than this method.
Please hor, not to be attempted without doctor's instructions, ok?