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The use of a salt inhaler for treatment of respiratory ailments is a drug-free alternative health therapy. It is believed that the periodic inhalation of salt-infused air calms and flushes the entire respiratory system, and can ease asthma, allergies and the flu. Alternative health practitioners also recommend that salt inhalation be used as a preventative measure during cold season.

Open a paper clip to form a straight piece of wire. Use pliers to hold one end of the wire over an open candle flame or an electric stove burner, until the end is orange with heat.

Use the hot paper clip to melt holes into the bottom of the plastic bottle. Press the heated paper clip to a point along the edge of the bottle, and apply light pressure until the wire melts through to the interior. Repeat every 1/8 inch along each edge of the bottle, reheating the paper clip as necessary.

Reheat the paper clip and melt 12 holes into center of the bottle lid.

Fill the bottle with 1/3 cup of coarse sea salt. Wrap a small amount of electrical tape around the sides of the lid to form a tight seal.

Use the inhaler by placing your mouth over the center of the lid and breathing in deeply. Remove your mouth from the bottle and hold your breath for 5 seconds, then exhale as forcefully as you can. Repeat this process for 10 inhalations.