Those eyes look very relaxed, yet so menacing as well. Seeing an image of a women smoking to my eyes, shows that she is confident and at the same time rebellious against any gender-based societies that existed. During those times, it considered un-lady like behavior ofc, and seeing this drawing of a women smoking shows how she is being bold and is challenging against society's expectations.

Now ofc, these sort of habits aren't looked upon as harshly. But seeing this, and your many other artworks definitely brings back memories of the old times when there were strict roles between men and women.