What is the best odor eliminator primer?

The best odor eliminator primer depends on severity of odor, type of odor, and whether you need oil-based or water-based, but professionals consistently rank KILZ Original oil-based and Zinsser B-I-N shellac-based as top for maximum odor blocking. For severe odors such as smoke damage from fire or cigarettes, pet urine, cat litter, cooking smells, and musty mildew smells, shellac-based primers are considered best because shellac seals odors permanently. Zinsser B-I-N Shellac Primer, made by Rust-Oleum, is often rated number one by restoration contractors for odor elimination, as it blocks toughest odors including smoke and pet urine, dries quickly, and can be used on any surface, though it has strong smell during application and requires denatured alcohol for cleanup and costs about 45 to 60 dollars per gallon. KILZ Original oil-based primer is second best, excellent for smoke, pet, and food odors, blocks stains, costs 25 to 35 dollars per gallon, but has strong solvent odor and needs ventilation. KILZ Restoration, which is water-based but mimics oil and shellac performance, is best low odor alternative for odor blocking, with less smell and soap and water cleanup, costing 35 to 45 dollars per gallon. For mild odors, KILZ 2 or Zinsser Bulls Eye 1-2-3 may be enough. For best results, clean source, fix moisture, then apply odor primer and topcoat.