Aerosol drug administration involves delivering medication via small particles that are inhaled through the lungs. It allows for rapid absorption and localization of drugs to treat conditions like asthma and COPD. Nebulization converts liquid medications into a mist using a nebulizer machine. Metered dose inhalers (MDIs) precisely deliver medication via an aerosol spray with each push of the canister. Proper administration of both requires specific techniques to ensure the patient inhales the full dose.