It's very unlikely it's freebase methamphetamine. For one thing, freebase is very volatile so you'll lose actual methamphetamine very quickly as soon as it's exposed to air (even in a baggie). I have seen a lot of commercial 'wet' methamphetamine and without fail it has been cut meth - usually with leftover solvent - never freebase. I have only ever heard of freebase methamphetamine being used by cooks as a novelty. That's not to say it doesn't get around, but I think it is very unlikely that's what you have (not impossible). I can't imagine any cook selling it as such, not only are they losing weight on their product every second it's out, but it's also harder to use (and sell in most cases) - plus, converting meth into its hcl salt is probably the easiest step of the whole synth. I can't imagine why anyone would stop when they had freebase, unless they wanted to try it as a novelty.
The most common smell of meth is benzene - it smells like wintergreen. Kind of a minty, menthol, sweet smell. This is a chemical used in synthesis and is an impurity (and very bad for you, though you don't need much leftover benzene to smell it). The other smell common to meth is ammonia though this is usually associated with 'speed' ('cat's piss').