Actually, in one of the most recent patches, I think SDE may have ninja-fixed the smokes showing the enemy dots on the mini-map. I've noticed lately that even when the area near the smoke is scouted (by planes or by teammates ships), it seems that the dots still don't show up. Maybe I'm wrong and just haven't paid close enough attention to the details, but I'm pretty sure this is the case. I'm gonna watch the HA videos that Fara just put up to verify or disprove this, and I will edit my post as necessary with my findings.
Alright, videos just proved it (even with the super-fast speed). Smoke now does NOT show the enemy dot on the mini-map even if the area with the smoke is swarming with friendly scouts or ships. Another ninja-fix brought to you by SDE...