Dr. Katherine Rivera-Spoljaric, Pulmonologist at St. Louis Children’s Hospital, explains how to dispose of used and/or expired asthma inhalers and its environmental impact. If thrown away in the garbage, used/expired inhalers might still have medication left inside and may end up in landfills. They can explode when punctured or under high temperatures. The medication can leak into the environment as greenhouse gases and can contaminate local water supply. Dispose of inhalers at local government agencies or hospitals, and pharmacies.