a person who reduces the intensity (e.g., of fears) and calms and pacifies; "a reliever of anxiety"; "an allayer of fears"

a drug that provides relief from asthma symptoms and is the most commonly used asthma medication

an asthma medicine that is used to reduce asthma symptoms and treat an acute asthma attack; they help to relax the muscles that tighten around the airways during an asthma attack and to open the blocked airways

Inhaler (puffer). Used for asthmatics, eg. Ventolin

a pitcher who does not start the game

someone who takes the place of another (as when things get dangerous or difficult); "the star had a stand-in for dangerous scenes"; "we need extra employees for summer fill-ins"

One who, or that which, relieves.