Why does your vacuum cleaner bag stink even though it has an odor reducing tablet in the bag which was changed as well as the filter?

Unfortunately, there is a smell because the vacuum motor actually absorbs the odors. This means that even when a new bag is used, and even when you use odor tablets, the smell is still there because it is actually coming from the vacuum and you smell it in the exhaust. There is really not much you can do about it. The same is true of fine dust particles. There is alot of hype about hepa filtration, and micro bags for vacuum cleaners, but the only dust free way to vacuum is with a central vacuum system.