Larmar doesn't even exist as a word and should not be accepted.
Calmar does exist, sort of (I looked it up, of course), and it's the name of some kind of mathematical ratio that measures the performance of an investment fund. It may be a proper noun, maybe named after a person named Calmar, which I suspect is the case.
Should proper nouns be permitted? I vote no, as permitting all the weird spellings of names that exist would basically ruin the game. Anybody could put in anything, and then insist that it's a name of somebody or something. And how about all the names of products that aren't really words but are familiar to everyone, such as Porshe?
Probably the best policy is just to say: No proper nouns.