US Patent 11826498 Capsule pod external filtration system

An external ventilation system of a capsule pod sleeping chamber that includes a wall with an exterior side that faces a communal space and an interior side that faces an interior of the capsule pod sleeping chamber. The external ventilation system further includes a duct to route first air out from the communal space to an area separated from air of the capsule pod sleeping chamber, where the duct is located between the exterior side and the interior side, and there is an aperture located on the exterior side opening into the duct.