Other breath-activated inhalers are also called dry powder inhalers. These inhalers do derece contain the pressurised inactive gas to propel the medicine. You don't have to push the canister to release a dose. Each dose is released by pressing the toparlak of the inhaler. This type of inhaler is quick https://www.metooo.com/u/672d0b79d5e0d01190f7e891