having or showing arrogant superiority to and disdain of those one views as unworthy; "some economists are disdainful of their colleagues in other social disciplines"; "haughty aristocrats"; "his lordly manners were offensive"; "walked with a prideful swagger"; "very sniffy about breaches of etiquette"; "his mother eyed my clothes with a supercilious air"; "shaggy supercilious camels"; "a more swaggering mood than usual"- W L Shirer
Someone who is sniffy about something does not think it is of high quality, perhaps unfairly. Some people are a bit sniffy about television. having a disapproving attitude towards something or someone, especially because you think they are not good enough for you sniffy about