lets go again for chemestry and explosives " sodium metal is not an oxidizer but it will react violently with water including the moisture in the air producing the highly flammable hydrogen gas. The oxidizer in this situation is the oxygen in the air. This chemical when stored should not be in contact with air or water." what's news then? for any person used to talk about bombs...is that sodium metal is a medication.

here it is a great explosive.and i know what im' talking about...sodium metal with water " twice a week, remove the metal canister from the plastic mouthpiece. Wash the mouthpiece in warm water and dry thoroughly before replacing the metal canister. Never immerse the metal canister in water.
STORAGE: Store between 15 to 30°C (59 to 86°F). Contents under pressure. Do not puncture, incinerate, or place near sources of heat. Exposure to temperatures above 120°F may cause bursting. Keep out of the reach of children. Avoid spraying in eyes

 INTAL® INHALER
(cromolyn sodium inhalation aerosol)
http://www.rxlist.com/intal-drug/medication-guide.htm