What if they waved a flag to announce a ballot result instead?
How about hanging a lantern, would that do?
Or a cannonade?
Where does the Bible forbid announcing selection of pastors using chimneys, precisely?
Can you cite the passage that has inspired your misgiving on this point?
Thats just it. There is no scripture that even remotely suggests this silly smoke signal business be conducted. But hey - if this traditional dogma makes anyone feel holy - then go for it.