Fumosis is a spell that allows smoke to come out a caster's wand and temporarily blind a victim. It was invented by Kevin Indra in 1953. Kevin was a dragon trainer, and he used it to tame the dragons.
Kevin patented it, giving him over a million galleons in his Gringotts account. Fumosis was one of the main spells the Order of the Phoenix used in the first war against Lord Voldemort, because it could blind many Death Eaters.
Fumo Latin. Steam.