Does vacuum sealed meat smell bad?

It shouldn't. Vacuum sealing can he used in 2 ways to enable you to keep it longer. Firstly, vacuum sealed meat keeps in the refrigerator at least twice as long g as it would in the original packaging. The second way is to freeze it after vacuum sealing it. This way it won't get freezer burn. When thawing it, it should left to thaw in the fridge overnight or over a day or 2. If it stinks thst probably means that it wasn't frozen fresh but was left too long until frozen. However many numbers of days left before expiration before you freeze it will be the same number of days until expiration after its removed from the freezer so it's important to freeze meat as fresh as possible.