stuffy

stuffy (http://definr.com/stuffy)

     adj 1: lacking fresh air; "a dusty airless attic"; "the dreadfully
            close atmosphere"; "hot and stuffy and the air was
            blue with smoke" [syn: airless, close, unaired]
     2: excessively conventional and unimaginative and hence dull;
        "why is the middle class so stodgy, so utterly without a
        sense of humor?"; "a stodgy dinner party" [syn: stodgy]