The Nova does give off some aroma, but minimally. I have two of them, and I have decarbed my dried buds for the last two grows. It smells fantastic, and it retains the aroma. All the terpenes are preserved intact when you use the Nova. Of course I always store the bud in a cool, dark place.
It's so easy to make tincture. I gently separate my buds (I try to disturb minimally, so I don't grind them), cover with Everclear 190 proof so they are completely submerged, stick it in the freezer, shake when I remember to for a week or two, and strain. I bought some almond milk straining bags on Amazon (they fit right over the top of a 32 oz. mason jar, so you can gently flip it over and strain into a large bowl. I squeeze the bag to get every drop I can out. Then I transfer to 2 oz. dropper bottles (I have a small funnel for the purpose). It stores indefinitely in the freezer, and it's definitely my favorite way of medicating: the high is exquisite and long-lasting.