I never heard of an allergy to a terp. I often get congested and am a daily user. I've wondered if my herb might be causing it especially if there are pesticides in it. How do they avoid this terp through temp control? Do they just vape at low temps? I wonder if this is affecting me.
Don't want to derail this thread with non-Herbalizer content, so I'll PM you.
But the Herbalizer aspect of this discussion would be, using the Herbalizer, you have three ranges you can work with:
1. Below your target(*) vaporization. Run your flower through a "free-style" session, and just blow that stuff off into the room. (Don't stick face into it, nor inhale what you don't want. Ventilation is a good thing.)
2. Target temp for what it is that you want. (CBD, TCH, whatever)
3. Above your target vaporization. Just don't go above your target and either toss the ABV at this point, or give it to a friend that don't share your affliction.
*The target temp would be the volatility point for what you effectively want. (In a lot of cases, the primary would be THC∆9. But not everybody, as one of my previous examples spoke to, want that. There are plenty of other compounds that have effects, depending upon one's condition.)
Of course this does little good if what you are after is really close or overlaps with what you are trying to avoid...