This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
哱 combines 口 (mouth) with 孛, which may contribute sound. The exact historical development is uncertain.
A mouth 口 beside the component 孛. Without a clear meaning, picture a mouth making a confused, bubbling sound.
For ホツ, imagine a hot pot bubbling over: hot -> ホツ, and the mouth 口 makes a bubbling noise.