FILTER CAPSULE FOR FLAVOR INHALATION ARTICLE, FILTER FOR FLAVOR INHALATION ARTICLE, HEATING-TYPE FLAVOR INHALATION ARTICLE, COMBUSTIBLE-TYPE FLAVOR INHALATION ARTICLE, AND NON-COMBUSTIBLE, NON-HEATING-TYPE FLAVOR INHALATION ARTICLE

A filter capsule for a flavor inhalation article includes a capsule shell encapsulating a content, and having fine irregularities on an outer surface of the capsule shell; and a fine powder deposited on a part of the outer surface of the capsule shell. On the outer surface of the capsule shell, a projection and a recess which is adjacent to the projection and is recessed with respect to the projection are repeated at random. The fine powder is deposited in a part of the recess of the outer surface of the capsule shell. In the part of the recess in which the fine powder is deposited, a particle size of the fine powder as observed with a microscope is smaller than a depth of the recess with respect to a top of the projection on the outer surface of the capsule shell. In a state where the capsule shell with the fine powder deposited on the outer surface is embedded in a filter material of a filter for a flavor inhalation article, the capsule shell is deformed in accordance with an external force applied in a direction intersecting a longitudinal direction of the filter for a flavor inhalation article.