The blower (101) includes a casing (1) having an air inlet (11) and an air outlet (12), a blower fan (5) arranged inside the casing (1), and an inlet ( 11) A cover which is detachably attached to the housing (1) so as to cover the first space (11), defines a first space (20) outside the inflow port (11), and has an air suction port to the first space (20). The member (2) and the carbon dioxide generating agent (17) arranged in the first space (20) or outside the cover member (2) are provided.送風装置（１０１）は、空気の流入口（１１）および吹出口（１２）を有する筐体（１）と、筐体（１）の内部に配置された送風ファン（５）と、流入口（１１）を覆って筐体（１）に着脱可能に取り付けられ、流入口（１１）の外側に第１空間（２０）を規定し、第１空間（２０）への空気の吸込口を有するカバー部材（２）と、第１空間（２０）内またはカバー部材（２）の外側に配置された二酸化炭素発生剤（１７）とを備える。
