Where does “মহ” come from?
মহ (Assamese) comes from Old Assamese মশ, from Sanskrit मशक, from Proto-Indo-Aryan makáśas, from Proto-Indo-Iranian makáćas, from Proto-Indo-Iranian mákā́ćš ~ makaćás, from Proto-Indo-Iranian mákš, from Proto-Indo-European mék-s ~ m̥k-és, from Proto-Indo-European mek- — to bleat.
মহ (Assamese): mosquito
Ancestry of “মহ”, step by step