K9 Units Can K9 smell through smell proof bags? March 3, 2026 by pups | Leave a Comment Yes, K9 units can often smell through "smell-proof" bags, though the effectiveness varies. While these bags are designed to contain odors, highly trained dogs with exceptional olfactory senses can still detect the scent of the contents, especially if the bag is not perfectly sealed or if the scent is very strong. Can K9 Units Smell […] Read more »