Based on the sources I found, I cannot confirm Fumakia as a commonly recognized Jain last name. It appears to be a rare surname in India, but I did not find a reliable source linking it specifically to the Jain community. ( forebears.io)
Explanation
In Jain tradition, some surnames are strongly associated with Jain families, but a surname alone does not always prove religious identity. So Fumakia may belong to a Jain family, but I cannot verify it as a standard Jain surname. ( api.pageplace.de)
Takeaway
Possible, but not confirmed. If you want, I can help you check whether it is more likely to be a Jain surname based on region or family background.
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