Which Kilz is best for odor blocking?

Which Kilz is best for odor blocking? For odor blocking, KILZ Original oil-based primer is generally considered best among Kilz line for severe odors like smoke, fire damage, pet urine, cooking, and musty smells, because oil-based formula seals odors strongly into surface. KILZ Restoration Maximum Stain and Odor Blocking, which is water-based but with advanced technology, is also excellent and marketed as low-odor alternative with performance close to oil-based and shellac, blocking heavy odors while low VOC and easy cleanup, often considered best water-based option for odor. KILZ 3 Premium also offers good odor blocking for moderate odors. KILZ 2 All-Purpose blocks light to medium odors but not heavy smoke. For best results, clean source, remove affected material, fix moisture, then apply primer. If odor is severe like fire or heavy nicotine, KILZ Original or KILZ Restoration are top choices, with Original being strongest traditional but with strong solvent smell during application that needs ventilation and 2 to 3 days to dissipate. Restoration provides strong blocking with less odor.