Have you tried with other medias ? If not, try different media. This is not NORMAL. There is an extreme heat wave and room temps here are in the 96F and I burn hundreds of discs and have not had any smell of any kind.
It IS normal for some blanks to have this strange smell from the spindle, usually a urine like smell, but it isn't normal for a burning smell coming out of your writer. Just scan your burns if they are ok and working just leave things as they are......it may do this being NEW and all, in time after many burns the smell should go away......if your discs are error free and burning well then I guess you should not worry... Keep good air flow inside your case.
Question...... Does your finished DVD come out being very HOT to the touch from your burner ?