If your talking about from combusting glass,..... after seeing whats collected in a carbon filter attachment, and the smell alone of whats trapped, I myself certainly won't be partaking in reclaim anymore from that scenario and would suspect that the tars alone is what you are tasting, and gawd knows what else is being concentrated from bi product residuals.
From my vape toy glass stems, I also found I had a slight 'odd' taste (obviously not as bad as above mentioned), but not from grinder/dry ice kief. So what I've been doing now is letting my glass stems and hand press cleaning soak in ISO, and use 'that' ISO to make a QWISO from larger dry ice and/or grinder kief and flower runs where I don't perceive it as much.
I do find concentrates in general to have a powerful taste in comparison to herb or kief alone, and I suspect that as like the other concentrated (particularly the flavinoids <--spelling ? ) product to be present and slightly overpower to my tastebuds.
^^ Just a personal perspective without factual data, but it works for me.