Ish. Our level of technology is limited to mixing a small set of base compounds on demand. That gives a range of possible scents about as small as you'd think.

Ish. Our level of technology is limited to mixing a small set of base compounds on demand. That gives a range of possible scents about as small as you'd think. The problem is that your sense of smell is a complex chemical detector. There are a lot of unique molecules that you can detect. We'd have to synthesize molecules on demand to get any reasonable range of scents, basically.