This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
馣 combines 香 (fragrance) with 奄, which likely contributes sound. The exact historical development is uncertain.
The left side 香 suggests fragrance, and the right side 奄 looks like a covering. Imagine a fragrant aroma spreading under a cover.
For アン, picture an aunt (アン) opening a jar of fragrant spices: aunt -> アン, and the scent fills the room.
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