Regardless of the order of B and C, their probability of drawing 1 or 2 is the same, which is 1/2.
But if you want to draw 3 with an A, that's different.
Which is more advantageous, smoking first or smoking later?
Is it b and c?
They are fair and have the same probability.
Your question is not clear.
If three people smoke one after another
Whether A draws 3 or not, we all draw, so everyone has the same probability.