A portable medication holder is disclosed for discharging liquid agent into an air stream. The holder comprises a housing having a first wall and a second wall with the walls movable relative to each other. The second wall may be moved between a closed position and an open position wherein an air pathway is open. The holder has evaporation means to assist in evaporation of the liquid agent into air in the air pathway which flows through a medication discharge chute to a user. The device also includes opening means for opening the medication container and releasing the liquid agent to the air pathway and one or more one-way valves to provide uni-directional air flow for one or both of the inspiratory air and expired air. The liquid agent is preferably methoxyflurane. The device may include an auxiliary gas pathway for delivery of a gas such as oxygen. It may also include an auxiliary air inlet for varying the concentration of inhaled agent. The holder is preferably sealed against the external environment. The holder may include a lanyard adapted to activate relative movement between the walls. It may also include a rip seal opening for one end and a deformable cap which may be sprung clear of the medication discharge chute by impact against a surface.