That's interesting, sounds like you're sensitive to a particular compound, and yes it could very well be from the hops, but I've never heard of anything like it.
There's no mention of "smoky" on the classic hop aroma/flavour wheels, but that just might be the way you perceive this particular compound, remembering that taste is actually quite a blunt instrument (savoury, sweet, bitter and sour) very much supplemented by smell, and very often what we think we are tasting is in fact an aroma.
Are there any beers in particular that you notice this more strongly than others?
I'll happily buy a couple to see if I can get the same flavour, any excuse