Effective household remedies for the flu include inhaling aromatic steam, drinking more liquids, saline sprays and moist heat compresses, according to WebMD. Decongestant nasal sprays also help, but they should not be used more than three days because the congestion may get worse after spray stoppage.
To create aromatic steam, fill a sink with steaming water, and add 2 teaspoons of chopped fresh ginger or 1 teaspoon of Vicks VapoRub, says WebMD. Get close to the steam, and inhale deeply. A hot shower also helps open the sinuses. Drinking at least 8 cups of water daily helps with the flu, and sufferers should stay away from alcoholic beverages and drinks with caffeine because they can lead to dehydration.